Poster Session II

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	Poster Session II
	Tuesday, June 23 and Wednesday, June 24, 12 noon - 2:30 PM Presenting authors of odd number boards at posters for first 2 hours on 1st day of session. Presenting authors of even number boards at posters for first 2 hours on 2nd day of session.

	Themes:	Education, Gametogenesis and Fertilization, Development and Evolution, Body Plan, Organogenesis, Tissue Differentiation, Intercellular Communication, Cell Biology of Development, Signaling Pathways, Morphogenesis and Movement, Late Breaking Research

	Education
	B1 How to create a poster that graphically communicates your message. K.W. Tosney.

	Gametogenesis and Fertilization		Top of page
	B2 The zero population growth (zpg) gene is required for mitotic amplification stage of early germ cells in Drosophila. S. Tazuke, C. Schulz, M. Fogarty, C. Wood, A. Guichet, A. Ephrussi, M. Fuller. B3 Sperm component required for fertilization in Caenorhabditis elegans. A. Singson, K. Mercer and S. L'Hernault. B4 Antibodies to plant sperm cells A. Smith, J. Merwin, H. Sharpless and D. Southworth. B5 pumilio is required for the asymmetry of germline stem cell division. M. Parisi, F. King and H. Lin. B6 Effects of charged and uncharged amino acids on sea urchin sperm-egg interaction. F. Ambroise, R.A. Bada, M. Londono, S. Mozaffarian, S.B. Oppenheimer. B7 Molecular cloning and sequence analysis of an amphibian egg jelly glycoprotein. E.J. Carroll, Jr. and T.R. Peavy.

	Development and Evolution		Top of page
	B8 Withdrawn B9 HOX, NK2, and paired-like, gene trees in metazoan evolution. D.K. Jacobs, M.N. Dawson and S.Lee. B10 The role of a novel EGF-like molecule in metamorphosis in ascidians. R. Eri, J. Arnold, B. Degnan and M. Lavin. B11 Inductive interactions during development of the sea urchin adult pentameral body plan. S. Minsuk and R. Raff. B12 Identification of an even-skipped homolog in leech. M.H. Song and D.A. Weisblat. B13 Genetic analysis of melanin patterning in Drosophila. J.R. True and S.B. Carroll. B14 Isolation and characterization of the vertebrate homolog of Drosophila Zfh-1. M.K. Liu, M. Su, G. Lyons, Z. Chen, S. Izumo and R. Bodmer B15 Multiple requirements for Medea, a Drosophila smad4 homologue, during wing development. D.J. Sutherland and L.A. Raftery. B16 Homeosis in a butterfly wing. S.D. Weatherbee, G. Halder, R. Galant, J. Selegue, H.F. Nijhout and S. Carroll. B17 Large-scale identification of Amphioxus genes from different developmental stages using oligonucleotide fingerprinting. G.D. Panopoulou, M.D. Clark, H. Gerst, R. Herwig, L.Z. Holland, N.D. Holland and H. Lehrach. B18 Evolutionary tooth loss in the jaw of cypriniform fishes. D.W. Stock and K.M. Weiss. B19 Role of the lens vesicle in regressive evolution of eye development in the cavefish. Y. Yamamoto and W.R. Jeffery. B20 Functional analysis of Xenopus nodal related proteins (Xnr1 and Xnr2). A. Cheng, A. Mehra, L. Attisano, J. Wrana and C. Wright. B21 Direct-developing frogs: a novel system for studying the development and evolution of the vertebrate limb. T.F. Carl, M.W. Klymkowsky, M.K. Richardson and J. Hanken. B22 Altered genomic imprinting in the rodent genus peromyscus. P.B. Vrana and S.M. Tilghman. B23 Functional domains of GLI are conserved through different phyla. J.M. Patterson, J.W. Yoon, E. Jan, E.H. Vallavicencio, J.T. Yang, C.Z. Liu, E.B. Goodwin, D.O. Walterhouse and P.M. Iannaccone. B24 Molecular and genetic analysis of the Ubx homologs in beetles and Strepsiptera R. Bennett, J. Cheatham, C. Vaughan, M. Whiting, S. Brown and R. Denell. B25 The decapentaplegic and 60A genes of the red flour beetle, Tribolium castaneum, are similar to Drosophila and vertebrate members of the TGF-beta superfamily in sequence, structure, and expression. J. Doctor, B. McKeon, G. Oshop, M. Pincus, M. Pletcher, J. Sanchez-Salazar, T. Teahan and A. Zahorchak. B26 Functional evolution of Hox genes J.K. Grenier and S. Carroll. 251 B27 Role of a novel fat-like cadherin in mouse development. B. Cox, K. Hadjantonakis and A. Magee. B28 Does vertebrate segmentation utilize pair-rules? S.L. Amacher and C.B. Kimmel. B29 An Otx homolog from an agnathan vertebrate: insights into vertebrate head evolution. J.M. Tomsa and J.A. Langeland.. B30 Are the chicken and the mouse cochlea homologous organs? D.K. Wu, H. Morsli, D. Choo and S. Oh. B31 Expression of Distal-less in molluscan gills: an evolutionary relationship between limbs and gills? S.E. Lee and D.K. Jacobs. B32 Withdrawn B33 Computer simulation of the segment polarity gene network. G. von Dassow, E. Meir, E. Munro and G. Odell.

	Body Plan		Top of page
	B34 Notch signaling positions germ-layer boundaries in the sea urchin embryo. D.R. Sherwood and D.R. McClay. B35 Caudal gene function in Drosophila adult. E. Moreno and G. Morata. B36 Molecular basis of the synergy between bicoid and hunchback, two Drosophila morphogens. V. Schaeffer, C. Loss, C. Desplan and E. Wimmer. B37 The role of the homeobox gene Ptx-2 in specification of left-right body axis and heart morphogenesis in mouse and frog. M. Campione, H. Steinbeisser, L. Lowe, K. Deissler, A. Schweickert, C. Langghut, M. Kuehn and M. Blum. B38 Failure of reading a developmental clock results in randomized segmentation in lunatic fringe mutant mice. N. Zhang and T. Gridley. B39 Essential role for Cripto, a member of the EGF-CFC gene family, in murine gastrulation and axial patterning. J. Ding, Y. Yan, L. Yang, H. Wang, A. Chen, A. Wynshaw-Boris and M.M. Shen. B40 Axis-inducing activity of members of the Drosophila Spatzle/Toll/Dorsal pathway in UV-ventralized Xenopus embryos. Christian Prothmann, Neil J. Armstrong, Herbert Steinbeisser, Robert DeLotto and Ralph A.W. Rupp. B41 Misexpression of En-1 abolishes limb development. Muriel Altabef, Cheryll Tickle, Andrew Lumsden and Cairine Logan.

	Organogenesis		Top of page
	B42 Trapping genes involved in inner ear development. W. Yang, T. Musci, C. Li and S. Mansour. B43 Msx1 mediates the induction of Patched by Sonic hedgehog in the mammalian tooth germ. Y.D. Zhang, X. Zhao, Y.P. Hu, T. St. Amand, M. Zhang, M. Ramamurthy, M.S. Qiu, R. Maas and Y.P. Chen. B44 Branchless, a Drosophila fibroblast growth factor, regulates tracheal terminal branch outgrowth. J. Jarecki and M. Krasnow. B45 Oxygen regulation of tracheal branching is mediated by the branchless fibroblast growth factor. E. Johnson and M. Krasnow. B46 Cell autonomous and non-autonomous regulation of organ-specific gene expression in the C. elegans pharynx. J. Thatcher, D. Moons, C. Haun, J. Kalb, J. McGhee and P. Okkema. B47 Epithelium-specific adenoviral transfer of a dominant-negative mutant TGF-beta type II receptor stimulates embryonic lung branching morphogenesis in culture and potentiates EGF and PDGF-AA. J. Zhao, P.J. Sime, P. Bringas, Jr., J. Gauldie and D. Warburton. B48 Intracellular components of TGF-beta and BMP-4 signaling. A.D. Bragg, R. Serra and H.L. Moses. B49 cIRX4 regulates chamber-specific gene expression in the developing heart. Z. Bao and C.L. Cepko. B50 Restriction of the heart field. M.S. Rones, M.J. Raffin and M. Mercola. B51 Elimination of myocardial differentiation by expression of dominant inhibitory forms of the tinman-related genes, XNkx2-3 and XNkx2-5. M.W. Grow and P.A. Krieg. B52 Patterning during organogenesis: molecular and genetic analysis of cardiac chamber formation D. Yelon, J. Alexander and D.Y.R. Stainier. B53 A screen for new genes involved in heart development. E.E.M. Furlong, G. Beitel and M.P. Scott. B54 Extracellular matrix remodeling during intestine regeneration in Holothuria glaberrima. J.L. Quinones-Rivera and J.E.Garcia-Arraras. B55 Gene expression during intestinal regeneration in the sea cucumber Holothuria glaberrima. P. Santiago, A.T. Mendez, J.L. Roig-Lopez, L. Nieves-Arriba, C. Santiago and J.E. Garcia-Arraras. B56 Trefoil peptides are early markers of epithelial cell differentiation in the developing rat gastrointestinal tract. M. Familari, G.A. Cook and A.S. Giraud. B57 Biliary atresia: is it a result of an imbalance in cell death and proliferation? V. Vijayan and C.E.L. Tan. B58 BMP-9 and BMP-10 two novel factors involved in heart and liver organogenesis. H. Neuhaus, V. Rosen and S. Thies. B59 Overexpression of noggin reveals multiple roles for BMPs during chick limb development. S. Pizette and L. Niswander. B60 Paired-related homeobox genes cooperate in limb development. J.F. Martin, M. Lu, A.R. Lacy, M.J. Kern, E.A. Argao, S. Steven Potter, E.N. Olson. B61 The mouse Jagged2 gene is required for craniofacial, limb and thymic development. Y. Lan, R. Jiang, H. Chapman, C. Norton, D. Serreze and T. Gridley. B62 Genetic analysis of zebrafish craniofacial development. C. Miller, A. Amores, B. Ullmann, J. Postlethwait and C. Kimmel. B63 The spf-1 locus is required for an epithelial-mesenchymal-like transition during C. elegans gonadogenesis. J.A. Miskowski, R.E. Ellis and J. Kimble. B64 The tail of the mouse sex determining factor, Sry, is a protein interactive domain. J. Zhang, P. Coward, M. Xian and Y. Chris Lau. B65 Cell division in the mouse gonad J. Schmahl and B. Capel. B66 The role of cell migration in the developing mouse gonad C. Tilmann and B. Capel. B67 Vascular patterning in the developing mouse gonad. J. Brennan and B. Capel. B68 Oral insulin-like growth factor-I at a physiological dose did not significantly improve the TPN-induced postnatal intestinal atrophy in newborn pigs. Yiqun Zhang, Li Ma and Ruojun Xu. B69 Deletion of gelatinase B results in compromised embryo implantation. J.L. Rinkenberger, M. Flannery, Z. Werb. B70 Effects of exogenous estrogen on early Xenopus development. M. Valenzuela and C.A. Forristall. B71 Studies with Frzb-1 confirm a requirement for Wnt signaling in early myogenesis. Malcolm Moos, Jr., Shouwen Wang, and Marie Krinks.

	Tissue Differentiation		Top of page
	B72 Induction of tissue fates by Drosophila bHLH-PAS proteins. E. Zelzer and B. Shilo. B73 Stem cells in turbellarian development, growth, and regeneration. L. Peter, R. Dietmar, R. Doris, R. Reinhard. B74 Mouse embryos deficient for the bHLH protein scleraxis fail to gastrulate. D. Brown, D. Wagner, J. Richardson and E.N. Olson. B75 Molecular and genetic analysis of endoderm formation in the zebrafish. J. Alexander, M. Rothenberg and D.Y.R. Stainier. B76 Molecular analysis of in vitro embryonic liver explant cultures. S.P.S. Monga, T. Cai, A. Rashid, B. Mishra and L. Mishra. B77 A model for the coordination of chondrocyte differentiation by TGF-beta, IHH, and PTHrP. R. Serra and H.L. Moses. B78 Blocking endogenous fibroblast growth factor-2 protein in chick skulls prevents normal bone differentiation in a dose-dependent manner. R. Moore and P. Thorogood. B79 Specification of cardiac myogenesis by bone morphogenetic proteins. T.M. Schultheiss. B80 Dopamine and chicken embryo heart development. D. Kirk, S. Kennison and K. Brown. B81 Xkoza, a bagpipe-related homeobox gene in Xenopus, may be involved in the specification of skeletal muscle fiber type. C.S. Newman and P.A. Kreig. B82 A knock-in approach to examine functional overlap between MRF4 and myogenin. V.M. Sumariwalla, J.L. Vivian and W.H. Klein.

	Intercellular Communication		Top of page
	B83 Two new receptor protein-tyrosine kinases with potenitial roles in developmental processes in Hydra vulgaris. N.A. Stover, R.E. Steele. B84 A novel blastocyst-specific gene. C.P. Landel and D.L. Stabley. B85 The differentiation of ciliated cells in the ectoderm of Xenopus embryos is regulated by lateral inhibition. G. Deblandre, N. Koyano and C. Kintner. B86 Expression pattern of Frzb-1 in early chick development. E. Berdougo, J. Sandler and L.W. Burns. B87 Cell-restricted effects of structural mutations in steel growth factor of mice. M.A. Bedell, R. Sripriya, W.S. Davis, H.K. Jimenez and L.B. Russell.

	Cell Biology of Development		Top of page
	B88 Environmental control of the cell cycle in developing Drosophila larvae. J.S. Britton and B.A. Edgar. B89 Dacapo and regulation of cell cycle exit during development. J.C. de Nooij and I.K. Hariharan. B90 Withdrawn B91 Expression and activity of NF-kappaB during mammary gland proliferation, differentiation, and involution. D.M. Brantley, F.E. Yull, D. Hicks and L.D. Kerr. B92 Role of p53 in apoptosis during perigastrulation mouse development. B. Heyer, O. Behrendtsen, A. MacAuley, and Zena Werb. B93 The role of retinoic acid and bone morphogenetic proteins in inducing apoptosis. M.B. Rogers, M.A. Glozak, S.M. Smith and D. Hinton. B94 Retinoic acid is required for the cell death that occurs during mouse limb and palate development. R. Cuervo, E. Salas-Vidal and L. Covarrubias. B95 Patterns of cell death during mouse limb development. E. Salas-Vidal and L. Covarrubias. B96 Regulation of proliferation of avian trigeminal ganglia precursor cells by guanosine 3,5-cyclic monophosphate- dependent protein kinase I. B.L. Firestein and D.S. Bredt. B97 The conjusome, a novel organelle in the ciliate Tetrahymena thermophila. C. Janetopoulos and K.J. Aufderheide. B98 Microtubules, microfilaments and possibly intermediate filaments participate in cytoplasmic reorganization in preimplantation hamster embryos. J. Squirrell, P.Sutovsky and B. Bavister. B99 Analysis of subsidiary development in discordia. K. Gallagher and L. Smith. B100 Sea urchin cytokinesis requires intact microtubules after anaphase. K. Larkin and M. Danilchik. B101 Regulating membrane dynamics in dividing cells. S. Conner and G. Wessel. B102 From centrioles to gamma-tubulin-positive intermediates to MTOC during growth and maturation of the mouse oocyte. P.G. Calarco. B103 Functional analyses of the EXTt2 multiple exostoses gene. D. Stickens, D. Brown and G. Evans. B104 Role of a new RHO family members in cell migration and axon guidance C. elegans. R. Kindt, I. Zipkin and C. Kenyon. B105 Cellular and molecular basis of Xenopus embryo ventralization by SPARC. M. Huynh and M. Ringuette. B106 Developmental role of PDGF-A in neural crest-derived connective tissues. J.R. Robbins, P.G. McGuire and S.L. Rogers. B107 Neural cell adhesion molecule (NCAM) expression is not required for myoblast fusion. C.A. Charlton, W.A. Mohler and H.M. Blau. B108 Mechanisms of muscle patterning and myoblast differentiation in Drosophila melanogaster. A. Paululat, A. Holz, C. Damm, S. Breuer, N. Grzeschik and R. Renkawitz-Pohl. B109 The role of nonsarcomeric myosin in Drosophila myogenesis. J.W. Bloor and D.P. Kiehart. B110 Requirement of Cripto-1 for cardiomyocyte differentiation in embryonic stem cells. C. Xu, G. Liguori, M.G. Persico and E.D. Adamson. B111 Identification of genes controlling neural development by gene trap mutagenesis. J.D. Hildebrand and P. Soriano. B112 Molecular characterization of the hsp60 gene homologue from Drosophila melanogaster. L. Perezgasga , E. Reynaud , L. Segovia and M. Zurita. B113 The function and subcellular localization of Costal2, a novel kinesin-related protein that interacts with members of the hedgehog signal transduction pathway. K.S. Ho and M.P. Scott. B114 Molecular characterization of Drosophila and human check point kinase 1 (chk1) gene. H. Li, H-j. Ring, U. Francke and B. Baker. B115 Homocysteine inhibition of PAX-3 and patched gene expression. G. Witt, T.H. Rosenquist and P.F. Gadson. B116 Regulation of the expression of a nanos homolog in leech. D. Kang, M. Pilon and D.A. Weisblat. B117 The Drosophila toll-like receptor 18-wheeler in embryonic development and the immune response. S.K. Syed, M.J. Williams, E.C. Baechler and E.D. Eldon.

	Signaling Pathways		Top of page
	B118 Control of embryonic compaction of the 8 cell mouse embryo. C.M. Pauken and D.G. Capco. B119 Genetic analysis of the role of gli genes during embryogenesis in double mutant mice. H. Park, K. Platt, M. Matise, A. Joyner. B120 The regulation of alpha7 integrin in myoblasts. W.E. Blanco and H.M. Blau. B121 Mice lacking paraxis and Myf-5 display severe defects in skeletal muscle and axial skeleton. J.A. Rawls, S. Parsons, N.J. Wilson-Rawls. B122 Relationship between sonic hedgehog (Shh) and bone morphogenetic protein 2 (Bmp-2) in patterning the chick limb. G. Drossopoulou, A.P. McMahon and C. Tickle B123 Dorso-ventral patterning of vertebrate limb and specification of tendons. D. D'Souza, K. Patel, M. Ensini, B. Parr and C. Tickle. B124 FGFs regulate Msx-1 transcription through Rel/NF-kappaB P.B. Bushdid, C-L. Chen, M. Byrom, R. Raghow, L.D. Kerr. B125 Sonic hedgehog promotes the differentiation and expansion of slow and fast muscle populations in avian somites. G. Cann, J. Lee and F.E. Stockdale. B126 Pro domains and proprotein convertases regulating bone morphogenetic proteins. D.B. Constam and E.J. Robertson. B127 The biochemical basis of an all-or-none cell fate switch in Xenopus oocytes J.E. Ferrell, Jr. and E. M. Machleder. B128 Regulation of ribosomal S6 kinase-p90rsk-, gsk-3 and beta-catenin in early Xenopus development. M.A. Torres , H. Eldar-Finkleman, E.G. Krebs and R.T. Moon. B129 GBP, a novel GSK-3 binding protein involved in dorsal-ventral axis determination in Xenopus. C. Yost, G.H. Farr III, S.B. Pierce, D.M. Ferkey, M. Chen and D. Kimelman. B130 Signal transduction by a frizzled homologue during anteroposterior patterning of ectoderm in Xenopus embryos. S.Y. Sokol, K. Itoh and M. Lisovsky. B131 Functional and biochemical interactions of Wnts with FrzA, a secreted Wnt antagonist. Q. Xu, P.A. D'Amore and S.Y. Sokol. B132 Surf1, an E3 ubiquitin ligase family member, antagonizes BMP signaling in Xenopus embryos through interaction with Smad1. H. Zhu and G.H. Thomsen. B133 Inhibitory Smads as intracellular antagonists of BMP signaling during Xenopus embryogenesis. T. Nakayama, H. Gardner, L. Berg, J.L. Christian. B134 An essential role for smad2 signalling pathways in head formation. P.A. Hoodless, T. Tsukazaki, S. Nishimatsu, L. Attisano, J.L. Wrana and G.H. Thomsen. B135 Smad7 inhibits mesoderm formation and promotes neural cell fate in Xenopus embryos. A. Bhushan and W. Vale. B136 The role of MAP kinase in neural specification in Xenopus. A. Uzgare , J. Akif Uzman , H.M. El-Hodiri and A.K. Sater. B137 Characterization of a catalytically inactive RTK in Hydra. M. Miller and R. Steele. B138 Following the activation of receptor tyrosine kinase pathways in situ during development. L. Gabay, R. Seger and B. Shilo. B139 Activating Rho, a GTPase, juvenilizes the pyralid moth, Plodia interpunctella (Lepidoptera: pyralidae). S.D. Dyby and D.L. Silhacek. B140 Soluble forms of Delta 1 specifically bind and activate Notch 1. C. Hicks, D. Nofziger, G. Bush, G. diSibio and G. Weinmaster. B141 Intersections of the FGF8 and Shh signals create inductive centers for dopaminergic and serotonergic neurons in the anterior neural plate. W.Ye, K. Shimamura, J.L.R. Rubenstein, M.A. Hynes and A. Rosenthal. B142 Molecular characterization of trimmed, a novel gene required for cell migration during tracheal branching and dorsal closure of the epidermis. K. Shim, K. Guillemin, M.A. Krasnow. B143 Genetic dissection of POU-domain function: characterization of MAD as a second site modifier of ventral veinless/Drifter function. K. Certel and W. Johnson. B144 The Drosophila naked gene (nkd) encodes a novel Wg-induced EF-hand protein which acts in the Wg receiving cells to inhibit Wg signaling. J. Mack, K. Wharton, W. Zeng, K. Wang and M.P. Scott. B145 Transgenic rescue experiments reveal essential requirements for Ecdysone receptor (EcR) function during each larval stage and at metamorphosis. Tong-Ruei Li and Michael Bender. B146 Withdrawn B147 TGF-beta and IGF-II pathways in embryonic salivary glands T. Jaskoll and M. Melnick. B148 The ciD mutation and its implications for the mechanism of Ci activation. T. Von Ohlen and J. Hooper. B149 The nuclear receptor SEX-1 is a component of the X-chromosome-counting mechanism that determines nematode sex. I. Carmi and B. Meyer. B150 Genetic screens to identify the nuclear targets of LET-23 signaling pathway in vulval morphogenesis. B.P. Gupta and P.W. Sternberg. B151 Regulation of DAF receptor kinases controlling C. elegans Dauer larva development. C.V. Gunther and D.L. Riddle. B152 A death effector domain-containing protein that mediates differential effects on Fas- and TNF-alpha-induced apoptosis. A. Estelles and H.M. Blau.

	Morphogenesis and Movement		Top of page
	B153 Morphogenesis in Acetabularia: blue light & calcium are required but the nucleus is not. R.Kratz, M.von Dassow and D. Mandoli. B154 Macromolecular delivery into the blastocoel without microinjection: a putative role for D-mannose and N-acetyl-D-glucosamine-containing receptors in sea urchin morphogenesis. V. Latham, M. Tully, R.A. Bada and S.B. Oppenheimer. B155 Molecular and biological characterization of a putative laminin receptor involved in sea urchin gastrulation. B.D. Crawford and B.P. Brandhorst. B156 Mechanical and geometric determinants of morphogenetic pattern in the ascidian notochord. E.M Munro and G. Odell. B157 Cell specific expression of HSP90 and induction of metamorphosis in ascidian larvae. C.D. Bishop, W.R. Bates and B.P. Brandhorst. B158 The role of Drosophila Fos during dorsal closure and imaginal disc development. J. Zeitlinger, D.B. Jackson, L. Kockel, F.A. Peverali, M. Mlodzik and D. Bohmann. B159 Raw: a novel gene product which functions in Drosophila morphogenesis. C. Lynne Byars and A. Letsou. B160 A new formin-homology domain protein required for Drosophila tracheal tube morphogenesis. G.J. Beitel and M.A. Krasnow. B161 Expression of a dominant negative Xenopus fibrillin construct in developing mesoderm perturbs convergent extension at gastrulation. P. Skoglund and R. Keller. B162 Misexpression of p120^cas catenin perturbs gastrulation but does not elicit Wnt-directed axis specification. A.F. Paulson, X. Fang, H. Ji, A.B. Reynolds and P.D. McCrea. B163 Paraxial protocadherin is a downsteam target of spadetail involed in morphogenesis of the mesodermal mantle. A. Yamamoto, S.L. Amacher, S. Kim, T. Bouwmeester, E. Agius, D. Geissert, C.B. Kimmel and E.M. De Robertis. B164 PDGF: signaling pathways involved in cellular migration and cell death. K.A. McLaughlin, K. Symes and M. Mercola. B165 Identification and characterization of LMO4, an LMO gene with a novel pattern of expression during embryogenesis. D.A. Kenny, L.W. Jurata, Y.Saga and G.N. Gill. B166 Roles of BMP signaling in peri-implantation mouse development. E. Coucouvanis and G.R. Martin. B167 The role of stem cell factor in mouse melanocyte precursor migration. M. Meller, B. Wehrle-Haller and J.W. Weston. B168 vab-8 is a key regulator of anteroposterior migrations in C. elegans. F.W. Wolf, B. Wightman and G. Garriga. B169 Molecular mechanisms of sex myoblast migration in C. elegans. C.S. Branda and M.J. Stern. B170 Topographical features act as strong guidance cues for myoblast alignment and formation of oriented myotubes in vitro. D.J.R. Evans and S. Oldfield. B171 The avian body plan is fully reconstituted in lateral blastoderm isolates. S. Yuan and G.C. Schoenwolf.

	Late Breaking Research		Top of page
	B172 frizzled activity is required for zebrafish axis formation. T.M. Hyatt, A. Nasevicius, H. Kim, J. Guttman, E. Walsh, S. Sumanas, Y. Wang, and S.C. Ekker. B173 Isolation of axis inducing factors from a primitive chordate by expression cloning. Shannon W. Davis and William C. Smith. B174 Organizer induction determines left-right asymmetry in Xenopus. Nanette M. Nascone and Mark Mercola. B175 TGFbeta-related signaling and lineage labeling studies during the initiation of Xenopus left-right axis formation. Brian A. Hyatt, Ann F. Ramsdell and H. Joseph Yost. B176 A potentially inhibitory role for neural crest in lens development. Nicolas Hirsch, Elizabeth K. Verna and Robert M. Grainger. B177 Temperature increase may mediate vibration stimulation of collagen gel contraction by rat tendon fibroblasts and bone forming cells. Barbara Johnson-Wint and Melvin Cobb B178 A screen for mutations in the Hedgehog and Decapentaplegic signal transduction pathways in Drosophila. Antonio Jacinto, Linda Parsons, Bruno Glise and Philip W. Ingham. B179 Genetic mapping of mutations in the zebrafish. R. Geisler, G-J Rauch, S. Glaser, H. Schauerte, S. Geiger-Rudolph and P. Hafter. B180 Switch of Hox protein functional specificity by activity modulation. Xuelin Li and William McGinnis. B181 The evolution of gene regulation: the organization of the even-skipped promoter in Tribolium castaneum. Adrienne Blair and Charles R. Marshall. B182 C. elegans Akt/PKB regulates dauer development in C. elegans. Suzanne Paradis and Gary Ruvkun. B183 Cloning and expression of chicken suppressor of fused. Richard V Pearse II and Clifford J. Tabin. B184 Hedgehog signaling activates the engrailed selector gene during imaginal disc regeneration. Matt Gibson and Gerold Schubiger.
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