KEYSTONE SYMPOSIA ON MOLECULAR & CELLULAR BIOLOGY ANNOUNCES:

Growth and Differentiation Factors in Vertebrate DevelopmentOrganizers: Rik Derynck and Zena Werb

April 3-10, 1992; Keystone, ColoradoSponsored by The Director's Sponsors: Monsanto Co., Schering Corp. and Warner-Lambert Co.

Integrins: Cell Adhesion and Transmembrane Communication in Development and DiseaseOrganizers: Robert Pytela and Vito Quaranta

April 3-10, 1992; Keystone, ColoradoSponsored by Genentech, ICI Pharmaceuticals Group, R.W. Johnson Pharmaceutical

Research Institute and SmithKline Beecham Pharmaceuticals

FOR COMPLETE PROGRAMS AND APPLICATION INFORMATION, PLEASE CONTACT:

Keystone Symposia • Drawer 1630 • Silverthorne, CO 80498 USAPhone: (303)262-1230 • Fax: (303)262-1525

1992 Keystone Symposia on Molecular & Cellular Biology

Intermediate Bkmtarkers of Precancer and their

Application In Chemoptpvaitkm

Organizers. Martin Lpkn, Bernard Lewi, Young S. Km andGaryJ.KetOctober 3 -7 ,1991; Keystone, Colorado

Inflammation, Growth Regulatory Molecules and

Atherosclerosis

Organizers: RusseB Ross and Michael A GimbroneJanuary 13-19,1992, Keystone, ColoradoSponsored by Du Pont Merck Pharmaceutical Co.

and The Upjohn Co.

The Molecular Biology of the Endothelial Cell

Organizers: Laurence A Laskyand Thomas MactagJanuary 13-19,1992; Keystone, ColoradoSponsored byGenentech and Hoffmann-La Roche

* Transcription Regulation In Development,

Differentiation and Disease

Organizers: Gerald R. Crabtree and Matthew P. ScottJanuary 13-20.1992; Tamarron. Colorado

Molecular and Cellular Biology of Host-Parasite

Interactions

Organizers: Nina M. Agabian and Harvey EisenJanuary 15-20,1992, Park City, UtahSponsored by The MacArthur Foundation

Bom Marrow TransplantationOrganizers: Robert Peter Gale and Richard E ChampfnJanuary 19-26,1992; Keystone, ColoradoExclusively Sponsored by Sandoz Pharmaceuticals

Molecular Mechanisms in DNA Replication &

Recombination

Organizers Harrison Echots and'Anna Maria SkakaJanuary 25-February 1.1992; Taos, New MexicoExclusively Sponsored by U.S. Biochemical Corp.

Negative Growth Control

Organizers: Harold L. Moses and Alan BahnakiJanuary 26 - February 2,1992; Keystone, ColoradoSponsored by Specialty Laboratories, tnc

* Positive Growth Control

Organizers: Charles J. Sherr, Tony Hunter and Thomas CurranJanuary 26 - February 2,1992; Keystone, Colorado

Nutrition & Central Nervous System Function

Organizers: G, Harvey Anderson John D. Femstrom,Maureen Mackey, GregoryD. MUer, Barbara J. RotsandThomasA VoimuthFebruary 2-6.1992; Lake Tahoe, CataniaExclusively Sponsored by International Life Sciences

Institute-Nutrition Foundation

Cytokines In Growth, Development and Pathogenesls

Organizers: Charles H. Evans and Stanley CohenFebruary 1 -8,1992; Taos, New MexicoSponsored by bnmunax and SmttMOlne Beecham

Pharmaceuticals

* Melanoma and Biology of the Neural Crest

Organizers. Michael T. Lotze, Margaret A Ticker andMark A IsraelFebruary1-8.1992; Taos, New Mexico

* Steroid/Thyroid Receptor Gene Super Family

Organizers: John A Ctiowsk Bert W. O'MateyandHerbert H. SamuelsFebruary 21 -27,1992, Tamarron, Colorado

Hematopotesis

Organizers: David W Goide and Charles J SherrFebruary 27 - March 5,1992; Tamarron, ColoradoSponsored by Amgen, bnmunex and

R. W. Johnson Research Institute

Cell Biology of Virus Entry, Replication and

Pathogenesls

Organizers' Michael BA Okjstone, AnHeleniusandRichard W. CompareFebruary 28 - March 5,1992; Taos, New MexicoSponsored by SmHh Kllne Beecham Pharmaceuticals

* Recognition of Endotoxin in Biologic Systems

Organizers' Rchard J LUevitch and Peter S TobiasMarch 1 -7,1992; Lake Tahoe, California

Antigen Presentation Functions of the MHC

Organizers: Michael J. Bevan and Paul M. AlenMarch 5-11,1992; Taos, New MexicoSponsored by Hoffmann-La Roche and

Kt Pharmaceuticals Group

Breast and Prostate Cancer

Organizers: Marc £ Lippman and Robert B. DicksonMarch 7-13,1992; Lake Tahoe, CaliforniaSponsored by Du Pont Merck Pharmaceutical Co.,

Genentech and Specialty Laboratories, Inc.

* Metal Ion/Molecular Biology Interface

Organizers- Vincent L Pecoraro, Stephen J LippardandMichadKarMarch 13-19,1992; Lake Tahoe, California

* GlycoblotogyOrganizers. JosephK WelpfyandGeraldW. HartMarch 21 -27,1992; Park City, Utah

Prevention and Treatment of AIDS

Organizer: DariP. BobgnesiMarch 27 - April 3,1992; Keystone, ColoradoSponsored by SmJttiKJIne Beecham Pharmaceuticals

and The Upjohn Co.

Critical Research Directions in Pediatrte HIV Infection

Organizers: £ RichardStiehm, ArthurAmmamandPhBpPizzoMarch 27-31,1992; Frisco, ColoradoExclusively Sponsored by The Pediatrics AIDS

Foundation

* Fundamental Mechanisms of Transcription

Organizers: Joan and Rm Conaway, fvkhad Datvnus andRobert SchMMarch 28 - Apr! 3,1992, Copper Mountan Colorado

Advances in Understanding Neurodegenerathre

Disorders

Organizers: DerrisD Cunningham and Donald L PriceMarch 28 - April 4.1992; Big Sky, MontanaSponsored by Amgen, bic and Du Pont Merck

Pharmaceutical Co.

Synapse Formation and Function: The Neuromus-

cular Junction and the Central Nervous System

Organizers: Stanley C Froehner and Jm PatrickMarch 28 - April 4,1992. Big Sky, MontanaSponsored by Lilly Research Laboratories

Molecular Biology of Human Genetic Disease

Organizers: Maimon M. Cohen, Beverly S. Emanuel,David H. Ledbetter and Arthur L BeaudetApri 3-10,1992, Copper Mountain, ColoradoSponsored by Du Pont Merck Pharmaceutical Co.

* Gene Transfer, Replacement and Augmentation

Organizers: InderM. Verma, FredH. Gage andRichard C. MuBganApril 3-9,1992, Copper Mountain, Colorado

* Growth and Differentiation Factors In Vertebrate

Development

Organizers Rik Derynck and Zena WerbApril 3-10,1992; Keystone, Colorado

Tissue Engineering

Organizer Eugene BeHAprS 3-10,1992; Keystone, ColoradoSponsored by Genentech and Director's Sponsor's

Integrlns: CeH Adhesion and Transmembrane

Communication in Development and Disease

Organizers Robert Pytela and Vito QuarantaApril 3-10,1992, Keystone, ColoradoSponsored by Genentech, Kl Pharmaceuticals Group,

R.W.Johnson Pharmaceutical Research Institute and

SmlthKllne Beecham Pharmaceuticals

* Crop Improvement via Biotechnology:

An International Perspective

Organizers: Robert Fraley, Marc Van Montagu,James Peacock and Charles AmtzenApril 10-16,1992; Keystone, Colorado

I | Registration in any meeting in an outlined groupqualifies for attendance in any meeting inthat group

* Keystone Symposia 1992 Director's Sponsor'sMonsanto Co.Schering Corp.

Warner-Lambert Co.

FOR COMPLETE PROGRAMS AND APPLICATIONINFORMATION, PLEASE CONTACT.

Keystone SymposiaDrawer 1630

Silverthorne, CO 80498 USA

Phone: (303)262-1230Fax: (303)262-1525

INFORMATION FOR CONTRIBUTORSManuscripts

Send to: Development Editorial Office,Dept of Zoology, University ofCambridge, Downing St, CambridgeCB2 3EJ, UK. Tel: (0223) 311789 ordirect to one of the editors.USA papers should be sent direct to:Dr D. Melton, Department ofBiochemistry and Molecular Biology,Harvard University, 7 Divinity Avenue,Cambridge, MA 02138, USA,Dr G. Rubin, Department of Molecularand Cell Biology, Box 539, LSABuilding, University of California,Berkeley, CA 94720, USA,or Dr T. Jessell, Center forNeurobiology and Behavior, ColumbiaUniversity, 722 West 168th Street,New York, NY 10032, USA.European papers can be sent to:Dr W. J. Gehring, Department of CellBiology, Biozentrum, University ofBasel, Klingelbergstrasse 70, CH-4056,Basel, Switzerland.Manuscripts should be in English,typewritten, double spaced, on one sideof the paper, and the pages numbered.Papers should be fully ready for press,since revision in proof will not bepossible. The author is requested toprovide three copies of the typescriptand figures, and should keep a copy.

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The list of references must be given inalphabetical order of author's names.The titles of journals should beabbreviated in accordance with theWorld List of Scientific Periodicals,4th edn (1963). The following style isused:Lawrence, P. and Johnston, P. (1988).

Cell lineage of the Drosophilaabdomen. Development 99,197-208.

Rossant, J. (1977). Cell commitmentin early rodent development. InDevelopment in Mammals, vol. 2(ed. M. H. Johnson), pp. 119-150.Amsterdam: North Holland.

Citations in the text are given in thefollowing form: Jones and Smith(1960) or (Jones and Smith, 1960).Where there are more than twoauthors citations should be in theform (Jones et al. 1960). Where morethan one paper by the same author(s)have been published in the same yearthey are cited as Jones (1960a), Jones(1960b) etc.

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ContentsVolume 113 (2) 1991

Livant, D. L., Hough-Evans, B. R., Moore, J. G.,Britten, R. J. and Davidson, E. H.Differential stability of expression of similarly specifiedendogenous and exogenous genes in the sea urchinembryo 385

Hope, I. A.Promoter trapping' in Caenorhabditis elegans 399

Johnston, A. R. and Gooday, D. J.Xenopus temporal retinal neurites collapse on contact withglial cells from caudal tectum in vitro 409

Sommer, R. and Tautz, D.Segmentation gene expression in the housefly Muscadomestica 419

Yokouchi, Y., Ohsugi, K., Sasaki, H. and Kuroiwa, A.Chicken homeobox gene Msx-1: structure, expression inlimb buds and effect of retinoic acid 431

Martin-Bermudo, M. D., Martinez, C . Rodriguez, A.and Jimenez, F.Distribution and function of the lethal of scute geneproduct during early neurogenesis in Drosophila 445

von Bartheld, C. S., Patterson, S. L., Heuer, J. G.,Wheeler, E. F.. Bothwell, M. and Rubel, E. W.Expression of nerve growth factor (NGF) receptors in thedeveloping inner ear of chick and rat 455

Bejsovec, A. and Martinez Arias, A.Roles of wingless in patterning the larval epidermis ofDrosophila 471

Shiurba, R. A., Jing, N., Sakakura, T.and Godsave, S. F.Nuclear trans location of fibroblast growth factor duringXenopus mesoderm induction 487

Render, J.Fate maps of the first quartet micromeres in the gastropodllyanassa obsoleta 495

Fire, A., Albertson, D., Harrison, S. W.and Moerman, D. G.Production of antisense RNA leads to effective andspecific inhibition of gene expression in C. elegansmuscle 503

Baird, S. E., Fitch, D. H. A., Kassem, I. A. A.and Emmons, S. W.Pattern formation in the nematode epidermis:determination of the arrangement of peripheral senseorgans in the C. elegans male tail 515

Wolfgang, W. J., Quan, F., Thambi, N. and Forte, M.Restricted spatial and temporal expression of G-protein asubunits during Drosophila embryogenesis 527

Matsuo, I., Kitamura, M., Okazaki, K. and Yasuda, K.Binding of a factor to an enhancer element responsible forthe tissue-specific expression of the chicken n A-crystal lingene 539

Nasr-Esfahani, M. M. and Johnson, M. H.The origin of reactive oxygen species in mouse embryoscultured in vitro 551

Latham, K. E. and Solter, D.Effect of egg composition on the developmental capacityof androgenetic mouse embryos 561

Miller, M.. Reddy, B. A., Kloc, M.. Li, X. X., Dreyer, C.and Etkin, L. D.The nuclear-cytoplasmic distribution of the Xenopusnuclear factor. xnf7. coincides with its state ofphosphorylation during early development 569

Pittack, C, Jones, M. and Reh, T. A.Basic fibroblast growth factor induces retinal pigmentepithelium to generate neural retina in vitro 577

Blumenfeld, M.. Maury, M., Chouard, T., Yaniv, M.and Condamine, H.Hepatic Nuclear Factor 1 (HNF1) shows a widerdistribution than products of its known target genes indeveloping mouse 589

MacKenzie, A., Ferguson, M. W. J. and Sharpe, P. T.Hox-7 expression during murine craniofacial development 601

Miinsterberg. A. and Lovell-Badge, R.Expression of the mouse anti-Mullerian hormone genesuggests a role in both male and female sexualdifferentiation 613

Bovolenta, P. and Dodd, J.Perturbation of neuronal differentiation and axon guidancein the spinal cord of mouse embryos lacking a floor plate:analysis of Danforth's short-tail mutation 625

Stark, K. L, McMahon, J. A. and McMahon, A. P.FGFR-4, a new member of the fibroblast growth factorreceptor family, expressed in the definitive endoderm andskeletal muscle lineages of the mouse 641

Huszar, D., Sharpe, A., Hashmi, S., Bouchard, B.,Houghton, A. and Jaenisch, R.Generation of pigmented stripes in albino mrce byretroviral marking of neural crest melanoblasts 653

Slack, J.M.W.The nature of the mesoderm-inducing signal in Xenopus:a transfilter induction study 661

Brook, F. A., Shum, A. S. W., van Straaten, H. W. M.and Copp, A. J.Curvature of the caudal region is responsible for failure ofneural tube closure in the curly tail (cf) mouse embryo 671

Barton, S. C , Ferguson-Smith, A. C, Fundele, R.and Surani, M. A.Influence of paternally imprinted genes on development 679

Yoshinaga, K., Nishikawa. S.. Ogawa, M.,Hayashi, S.-l., Kunisada, T., Fujimoto, T.and Nishikawa, S.-l.Role of c-kit in mouse spermatogenesis: identification ofspermatogonia as a specific site of c-kit expression andfunction 689

Sink, H. and Whitington, P. M.Early ablation of target muscles modulates thearborisation pattern of an identified embryonic Drosophilamotor axon 701

Palmer, S. J. and Burgoyne, P. S.The Mus musculus domesticus Tdy allele acts later thanthe Mus musculus musculus Tdy allele: a basis for XYsex-reversal in C57BL 6-YPOS mice 709

Torres, M. and Sanchez, L.The sisterless-b function of the Drosophila gene scute isrestricted to the stage when the X:A ratio determines theactivity of Sex-lethal 715

The Company of Biologists Limited, Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJISSN: 0950-1991 © The Company of Biologists Limited 1991