f Action des ultra-sons sur I'embryon et sur differents organes. Gallus spec. (Aves) (avec Y. LUTZ- 



OSTERTAG) 

 g Action des pesticides sur le developpement de I'embryon. (Aves) 

 h Free-martinisme spontane. (Aves) (avec Y. LUTZ-OSTERTAG) 

 LUTZ (OSTERTAG), Ms. Y.; D.Sc. - Lab. de Biol. Anim., Univ. de Clermont II, B.P. 45, 63170 



AUBIERE, France 

 a La genese de I'asymmetrie du tractus genital et la regression des canaux de Miiller par la methode 



d'explantations. Gallus spec. (Aves) 

 b Role des hormones dans la differenciation primaire du sexe. Gallus spec, Coturnix coturnix (Aves) 

 c Polyembryonie experimentale. (Salmonidae, Teleostei) (avec H. LUTZ) 



d Action des ultra-sons sur I'embryon et sur differents organes. Gallus spec. (Aves) (avec H. LUTZ) 

 e Culture in vitro du blastoderme. (Aves) (avec H. LUTZ) 

 f Free-martinisme spontane. (Aves) (avec H. LUTZ) 

 g Hybridation. Anas spec. (Aves) 



h Action des pesticides sur le developpement de I'embryon. (Aves) 

 LY THI Ba, Ms.; Dr. - Lab. de Bot., Fac. de Pharm. Paris-Sud, rue J. B. Clement, 92290 CHATENAY- 



MALABRY, France 

 a Comparative embryogenesis and phylogenetic relations. (Ranales; Helobiae) 

 b Scanning electron microscopy of embryogenesis. Potamogeton spec. (Helobiae), HeUeborus spec. 



(Ranales) 

 c Experimental embryogenesis: callus formation and development, embryoid formation. Potamoge- 

 ton spec. (Helobiae). Myosurus spec. Delphinium spec, Actaea spec. (Ranales) 

 LYON, Ms. M. F.; ScD. - MRC Radiobiol. Unit, Didcot, HARWELL, 0X11 ORD, England 

 a Developmental genetics of mutant genes; X-chromosome inactivation ; experimental chimaeras. 



Mus musculus (Rodentia) 

 McGEADY, T. A.; Prof. - Dept. of Vet. Anat., Univ. Coll., DUBLIN, Ireland 



temporarily: Dept. of Anat., N.Y. State CoU. of Vet.Med., CorneU Univ., ITHACA, NY 14853, 



USA 

 MACHA, J.; RNDr. - Dept. of Exp. Zool., Charles Univ., Vinicna 7, 12844 PRAHA 2, Czechoslovakia 

 a Contractile proteins and collagen in early development. (Amphibia) 

 McKENZIE, J.;M.D. - Dept. of Devi. Biol., Marischal Coll., Univ. of Aberdeen, ABERDEEN AB9 IAS, 



Scotland, UK 

 a The metabohc characteristics of different tissues in the early embryo. Gallus gallus (Aves) 

 b The state of cell differentiation in early embryos. Same species as a 

 c Effects of collagen (especially deficiency of Type I coUagen) on hypertrophic and keloid scar 



tissue. Same species as a, and Homo sapiens (Primates) 

 d Effects of hypoxia caused by lowered progesterone levels in the etiology of spina bifida and of 



heart defects (excess cell death). Same species as a 

 McLaren, Anne; Ph.D. - MRC Mammal. Devi. Unit, Univ. Coll. London, Wolfson House, 4 Stephen- 

 son Way, LONDON NWl 2HE, England 

 McLEAN, J. M.; M.D. - Anat. Dept., The University, MANCHESTER M13 9PL, England 

 a Development of immunological mechanisms in the foetus. (Mammalia) 

 b Immunology of the maternal-foetal relationship. (Mammalia) 

 c Antigenicity of spermatozoa. Rattus norvegicus (Rodentia) 

 MacLEAN, N.; Ph.D. - Dept. of Biol., Univ., Med. & Biol. Sci. Bldg., SOUTHAMPTON S09 3TU, 



England 

 a Developmental changes in haemoglobin, and the control of its synthesis. Xenopus laevis (Anura), 



Mus musculus, Rattus spec. (Rodentia), Gallus domesticus (Aves) 

 b Chromatin activation and repression during development. 

 MacMILLAN, G. J.; Ph.D. - Dept. of Devi. Biol., Marischal CoU., Univ. of Aberdeen, ABERDEEN 



AB9 1 AS, Scotland, UK 

 a Control of pigment pattern formation: interactions among chromatoblasts and between these 



cells and their surrounding tissues (transplantation; tissue culture; wild-type and mutant albino 



periodical). Xenopus laevis (Anura) 

 b Determination and cell surface properties of neural crest cells. Same species as a 

 MacQUEEN, Ms. H. A.; Ph.D. - MiU Hill Labs., Imp. Cane. Res. Fund, Burtonhole Lane, LONDON 



NW7 IAD, England 

 a Surface proteins and glycoproteins in pre-implantation stages; stage-specificity of certain pro- 

 teins and their possible role in development, as revealed by SDS-PAGE. Mus musculus (Rodentia) 

 b Plasma membrane proteins of teratocaicinoma and neuroblastoma cells; production of mono- 

 specific antisera against these cells. Homo sapiens (Primates) 

 MADER, M.; Dr. - Bot. Inst, der Univ., Im Neuenheimer Feld 360, 6900 HEIDELBERG, BRD 



(Germany) 

 a Enzymatic differentiation of tissue in whole plants, tissue cultures and protoplasts; localisation 



of peroxidases during cell development. Nicotiana tabacum (Solanaceae) 

 MADJEREK, Z. S.; Dr., Prof. - Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, 1092 AD 



AMSTERDAM-0., Netherlands 

 MAEHR, R.; M.Sc. - Inst, of Cell Biol., Swiss Fed. Inst, of Technol., Honggerberg, 8093 ZURICH, 



Switzerland 

 a Characterization of chromatin. Chironomus spec (Diptera) 

 b Ion sensitive gene activation of polytene salivary gland nuclei determined by RNA and protein 



synthesis. Chironomus thummi, C. tentans (Diptera) 

 c In vitro translation of large RNAs 

 MAHON, M.; B.Sc - Dept. of Anat., Med. School, Univ. of Manchester, Oxford Rd., MANCHESTER 



M13 9PT, England 

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