b Development of muscle and neuromuscular connections. Gallus domesticus (Aves), (Mam- 

 malia) 

 c Developmental neuropharmacology (transmitter substances). Gallus domesticus (Aves) 

 d Trophic influence of motor neurons in developing muscle. Gallus domesticus (Aves), 



(Mammalia) 

 DRAGOMIROV, N. I. Dr.biol.sci., Prof. — Inst, of Anim. Evolut. Morphol. and Ecol Acad 

 of Sci. of the U.S.S.R., Lenin Ave. 33, MOSCOW W-71, U.S.S.R. • 



a The organogenesis gradients in the hyoideo-mandibular section of the lateral sensory 



system. Acipenser guldenstadtii, A. vuthenus (Chondrostei) 

 DREYER, Miss M. V. M.Sc. — Dept. of Zool., Univ. of the O.F.S., BLOEMFONTEIN, 



S.Africa 

 a The application of different stains (with differences of the pH) to detect the Nissl bodies 



in embryonic and adult neurons. Gallus domesticus (Aves), Oryctolagus cuniculus (Lago- 



morpha) 

 DRUGA (PUSZTASZERI), Mrs. A. M.D. — Inst, of Histol. and Embryo!., Med. Univ., 



Tiizolto u. 58, BUDAPEST IX, Hungary 

 a Teratogenetic effect of chemicals, especially drugs containing the piperazin ring. Rattus 



rattus (Rodentia) 

 b The importance of the praedifferentional stage in teratogenesis. Same species as a 

 DRUKKER, J. Ph.D. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AM- 



STERDAM-O., Netherlands 

 a Descriptive and experimental studies of the developing central nervous system. Gallus 



domesticus (Aves) 

 b Histochemical characteristics of developing chemoreceptor organs. Oryctolagus cuniculus 



(Lagomorpha), Mus musculus, Rattus norvegicus (Rodentia) 

 c Embryology of the endocrine cells of the pancreas. Same species as a 

 DUBENDORFER, A. Dipl.phil.il — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kiinstlergasse 16, 



CH-8006 ZURICH, Switzerland 

 a Determination and cell lineage in imaginal discs. Musca domestica (Diptera) 

 DUBEY, P. N. M.Sc, Prof. — Dept. of Anat., Med. Coll., NAGPUR-3, M.S., India 

 a Regeneration of the apical ectodermal ridge; its influence on individuation of distal limb 



elements (histology). Gallus domesticus (Aves) (with S. S. NAVAGIRI and T. L. PATIL) 

 b Morphology and histochemistry of metanephros development to stage 40. Same species 



as a (with A. QUADEER) 

 c Effect of removal of the optic vesicle on histogenesis of the optic lobe. Same species as a 



(with V. M. SALTHE) 

 DUBEY (TIWARI), Mrs. R. M.Sc. — Dept. of Biochem., Fac. of Sci., Allahabad Univ., 



ALLAHABAD-2, U.P., India 

 a Cuticle proteins in egg shell, larva, and pupa (electrophoresis). Philosamia ricini 



(Lepidoptera) (with R. PANT) 

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



Gabrielle, 94 NOGENT-sur-MARNE, France 

 a Lignee germinale et morphogenese sexuelle. Gallus gallus (Aves) (avec D. CUMINGE) 

 DUERKSEN, J. D. Ph.D., Prof. — Dept. of Biol., Univ. of Calgary, CALGARY 44, Alta., 



Canada 

 a Genetic expression and its regulation in eucaryotic and procaryotic cells. Mus musculus 



(Rodentia) 

 DUKE, E. J. Ph.D. — Zool. Dept., Univ. Coll., Stillorgan Rd., DUBLIN 4, Ireland 

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



27710, U.S.A. 

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



cells). (Mammalia) 

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



Tenn. 37830, U.S.A. 

 a Cytology of the oocyte, especially development and vitellogenesis. Xenopus laevis (Anura) 

 b Electron microscopy of Wolffian lens regeneration. (Urodela) 

 DUNCAN, D. Ph.D., Prof. (Emer.) — Dept. of Anat., Med. Branch, Univ. of Texas, 



GALVESTON, Tex. 77550, U.S.A. 

 DUNCAN, J. T. Ph.D., Prof. — Dept. of Cell and Molec. Biol., School of Nat. Sci., San 



Francisco State Coll., SAN FRANCISCO, 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 inter- 

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



different pigment pattern genotypes. Taricha torosa, Amby stoma mexicanum (Urodela) 

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



development; isolation and characterization of intracellular materials controlling heart 



development. Taricha torosa, Ambystoma tigvinum (Urodela) 

 DUNG, H. C. Ph.D. — Dept. of Anat., Univ. of Texas Med. School at San Antonio, 7703 



Floyd Curl Drive, SAN ANTONIO, Tex. 78229, U.S.A. 

 a Etiology of the developmental abnormalities in the "torpid" mutant. Mus musculus 



(Rodentia) 



49 



