c The influence of the peripheral field on the morphogenesis of the anterior horn cells. 



Gallus domesticus (Aves) 

 d Polydactyly — an experimental analysis. Gallus domesticus (Aves) 



DUBOIS. R. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S.. 49 bis Av. de la Belle 

 Gabrielle, 94-NOGENT-sur-MARNE, France 



a Recherches sur la lignee germinale. Gallus gallus (Aves) 



DUFAURE. J. P. Dr.es Sci. — Lab. de Biol. Anim.. 1 Ave. Vercingetorix. CLERMONT- 

 FERRAND, France 

 a Embryologie generale et morphogenese de I'appareil genital. Larcerta vivipara, L. murahs. 

 Vipera aspis (Reptilia) 



b Analyse du developpement de I'appareil genital (castration, hypophysectomie, injections 

 de steroides et de gonadotropines). Lacerta vivipara. L. muralis, Vipera aspis (Reptilia) 



c Histochimie et ultrastructure de la gonade embryonnaire. (Reptilia; Mammalia) 



DUKE, K. L. Ph.D. — Dept. of Anat., Med. Center. Duke Univ., DURHAM, N.C. 27706. 

 U.S.A. 



a Comparative histology of the ovary (including developmental stages and history of germ 

 cells). Cynocephalus spec. Manis spec, Nycticebus spec, Presbytia spec, Pteropus spec. 

 Tupaia spec. Urogale spec. (Mammalia) 



DUMONT, J. N. Ph.D. — Biology Div., Oak Ridge Natl. Lab., P.O. Box Y. OAK RIDGE. 

 Tenn. 37830, U.S.A. 



a Electron microscopic observations of developing oocytes (comparative aspects of oocyte 

 maturation and mechanisms of vitellogenesis). (Invertebrata; Vertebrata) 



DUNCAN, J. T. Ph.D., Prof. — Dept. of Biol.. San Francisco State College. SAN FRAN- 

 CISCO, Calif. 94132, U.S.A. 



a Pigment cell migration and differentiation; developmental control of migration and pattern 

 formation; developmental behavior of chromatophores and their immunological interactions 

 in mixed populations of pigment cells from different species or from animals with different 

 pigment pattern genotypes. Taricha torosa, Ambystoma mexicanum (Urodela) 



b Heart determination and differentiation; temporal and spatial patterns of control of heart 

 development; isolation and characterization of intracellular materials controlling heart devel- 

 opment. Taricha torosa, Ambystoma tigrinum (Urodela) 



DUNN, G. A. B.Sc — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St.. 

 LONDON W.C.I. England 



a Behaviour and interactions of nerve fibres from spinal ganglia grown in tissue culture. 

 Gallus gallus (Aves) 



DUPRAT (ESCUDIfi). Mrs. A.-M. Lic.es Sci. — Lab. de Biol, gener.. Fac des Sci.. 118 

 Route de Narbonne. 31 -TOULOUSE. France 



a Culture in vitro de cellules embryonnaires diploides et heteroploides. (Amphibia) 



b Etude experimentale de la differenciation des cellules embryonnaires en culture in vitro. 

 (Urodela) (en collaboration avec J. C. BEETSCHEN) 



DURAN DE LOPEZ. Mrs. L. M.D. — Catedra de Embriol.. Fac. de Med.. Univ. de Los 

 Andes, MfiRIDA. Venezuela 



a Development of the blood vessels of the genital organs. Homo sapiens (Primates) 



h Development and functional anatomy of the mammary gland. (Mammalia), Homo sapiens 

 (Primates) 



DURAND. J. P. — Lab. Souterrain du C.N.R.S.. 09 MOULIS (Ariege). France 



a Development and experimental embryology of the eye. Proteus anguinus (Urodela) 



b Reproduction cuid development. Hydromantes italicus (Urodela) 



DURANTE, Miss M. C. Dr.Sc — 1st. di Zool.. Univ. di Palermo. Via Archirafi 18, 90123 

 PALERMO. Italia 



a Cholinesterase, dipeptidase and other enzymes in embryonic development. (Ascidiae; Pisces) 



DUSPIVA, F. Dr.. Prof. — Zool. Inst, der Univ.. Physiol. Lehrstuhl. Berlinerstr.. HEIDEL- 

 BERG. Deutsche Bundesrepublik 



a Localization of enzymes within the embryo and in subcellular fractions. (Insecta; Amphi- 

 bia) 



h Protein differentiation, ontogeny of enzyme patterns. (Insecta; Amphibia) 



c Energy metabolism and metabolism of nucleic acids, nucleotides, cofactors during develop- 

 ment. (Teleostei; Amphibia) 



d Cell-physiological mechanisms of malformation in early development. (Amphibia) 



DUTRIEU, Miss J. Dr.es Sci. — Lab. de Physiol, gener., Fac des Sci. de Bordeaux, 40 Rue 

 Lamartine. TALENCE (Gironde), France 



a Metabolisme des glucides (trehalose) au cours du developpement. Artemia salina, Lepidu- 

 rus apus (Anostraca, Crustacea), Calliphora erythrocephala (Diptera), Bombyx mori 

 (Lepidoptera), Carausius morosus (Phasmidoptera), Tenebrio molitor (Coleoptera) 



DZIALLAS, P. R. Dr.med.. Prof. — Anat. Inst, der Univ.. Pettenkoferstr. 11. MUNCHEN 

 15. Deutsche Bundesrepublik 



• EAKIN. R. M. Ph.D., Prof. — Dept. of Zool., Univ. of California, BERKELEY, Calif. 

 94720, U.S.A. 



a Determination of neural plate, sucker and hypophysis. Hyta regilla (Anura) 



44 



