b. A study of the dwarf gene in association with other genes. Mus musculus 



(Rodentia) 

 MECKLENBURG. C. L. F. C. von Fil.mag. — Embryol. Dept., Zool. Inst. 



of the Univ. of Lund, LUND, Sweden 

 a. The development of the saccus vasculosus. (Teleostei) 

 MEDAWAR, P. B. M.A., D.Phil., F.R.S., Prof. — Dept. of Zool. and 



Comp. Anat., Univ. Coll. London, Cower St., LONDON W.C. 1, Eng- 

 land 

 MELLINGER, J. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de 



Biol, gener., 12 Rue de l'Universite, STRASBOURG, France 

 a. Genese, differenciation et role des sacs vasculairs, etude experimentale. 



(Pisces) 

 MENDONQA, H. Prof. — Cadeira de Histol. e Embriol., Fac. de Medici- 



na, Univ. do Recife, Caixa Postal N. 616, RECIFE, Brasil 



(no embryological work in progress) 

 MENKES, B. Dr.med., Prof. — Academia Republicii Populare Romine, Baza 



de cercetari stiintifice Timisoara, Bui. Mihai Viteazul 24, TIMISOARA, 



Roumanie 



a. Embryonale Heterotransplantationen. Melanogenese. Gallus domesticus 

 (Aves) 



b. Regeneration im Zentralnervensystem. Gallus domesticus (Aves) 



c. Elektrophoretische Analyse der Entwicklungsprozesse. Gallus domesticus 

 (Aves) 



d. Entwicklung der Reaktivitat beim Embryo. Gallus domesticus (Aves) 



e. Transplantation von malignen Tumoren in Embryonen. Gallus domesticus 

 (Aves) 



f. Studien an embryonalen heterostadialen Transplantaten. Gallus domesti- 

 cus (Aves) 



MENSCHIK, Z. B.A., M.D., D.Sc, L.M.C.C, Prof. — Dept. of Anat., 

 School of Med., Georgetown Univ., 3900 Reservoir Road, N.W., 

 WASHINGTON 7, D.C., U.S.A. 



a. Dietary factors in development. Mus musculus (Rodentia) 



b. Deficiency of vitamin E and essential unsaturated fatty acids in the 

 development of the central nervous system. Mus musculus (Rodentia) 



MERCIER (PAROT), Mrs. L. Dr. es Sci. — Lab. d'Embryol., Fac. de Med., 

 45 Rue des Sts. Peres, PARIS Vie, France 



a. Teratogenese par bleu trypan, sulfamides hypoglycemiants, antimetabo- 

 lites. Rattus spec. (Rodentia) 



b. Influence de la cortisone sur la gestation et le developpement foetal. 

 Rattus spec. (Rodentia) 



MERKLE, U. Dr.Med. — Anat. Inst, der Univ., TUBINGEN, Deutsch- 



land 

 a. Spermatogenese und Sertoli-Zellen. Rattus spec. (Rodentia) 

 METTETAL, C. Dr. es Sci. — Lab. de Biol. Anim., Centre d'Etudes Sup. 



Sci., Avenue Biarnay, RABAT, Maroc 

 METZ, C. B. Ph.D., M.I.I.E. — Oceanographic Inst., Florida State Univ., 



TALLAHASSEE, Florida, U.S.A. 



a. Antigens of the sperm surface. Arbacia spec. (Echinoidea) 



b. Release of S 35 from labelled fertilizin by sperm. Arbacia spec. (Echinoi- 

 dea) (in collaboration with R. HATHAWAY) 



83 



