Clcmcnt-Cou 



a. Localization of morphogcnic factors: experimental analysis, llyanassa 

 obsoleta (Gastropoda) 

 CLEMENTS. L. P. Dr — Dept of Anat.. School of Med.. The Creighton 

 Univ.. OMAHA. Nebraska. U.S.A. 



a. The significance and fate of embryonic mesenchyme in the middle ear. 

 Morphologic study of ears from 1-21 days. Rattus norvegicus (Holtz- 

 mann strain) (Rodentia) (in collaboration with P. GUGGENHEIM 

 and A. SCHLESINGER) 



b. Freeze-drying studies with refined cytologic study and investigation of 

 changes in ground substance of mesenchyme. Rattus norvegicus (Holtz- 

 mann strain) (Rodentia) (in collaboration with P. GUGGENHEIM 

 and A. SCHLESINGER) 



c. Fate of the mesenchyme in the middle ear in dwarf animals and their 

 ..normal" heterozygous littermates. Rattus (Rodentia) (in collabo- 

 ration with P. GUGGENHEIM and A. SCHLESINGER) 



COHEN. A. I. Ph.D. — Dept of Anat.. Med. School. Washington Univ., 



ST LOUIS 10. Mo.. U.S.A. 

 a. Reduced and oxidized DPN levels in the early embryo. Rana pipiens 



(Anura) 

 COHN S. A. B.S.. M.S., Ph.D. — Div. of Anat.. Med. Units Div.. Fac. of 



Biol. Sci.. Univ. of Tennessee. MEMPHIS 3, Tenn., U.S.A. 



a. The development of glands of ectodermal origin. Gallus domesticus 

 (Aves), Mus musculus (Rodentia) 



b. Cytological. cytochemical and histochemical studies on the initiation of 

 secretory activity in developing ectodermal glands. Mus musculus 

 (Rodentia) 



c. Histochemical studies on the effects of viruses on developing embryos. 

 Gallus domesticus (Aves) 



COLOMBO, G. DrBiol.Sci. — 1st. di Zool. e Anat. comp.. Fac. di Sci., 

 Via Loredan 10, PADOVA, Italia 

 a. Chromosomes in early development. (Amphibia) 



h. Effects of hormones on cleavage and early development. (Amphibia) 

 e. Gametogenesis. (Arthropoda) 

 COLWIN, A. L. Ph.D., Prof. — Dept of Biol.. Queens Coll.. Flushing 67, 

 L.I.. NEW YORK, N.Y., U.S.A. 



a. Fertilization studies. Saccoglossus (Enteropneusta) . (Echinodermata) 

 (in collaboration with Mrs L. H. COLWIN) 



b. Normal and experimental development. Saccoglossus (Enteropneusta) 

 (in collaboration with Mrs L. H. COLWIN) 



COLWIN. Mrs L. HUNTER Ph.D.. ProL — Dept of Biol.. Queens Coll.. 

 Flushing 67. L.I.. NEW YORK. N.Y.. U.S.A. 



a. Fertilization studies. Saccoglossus (Enteropneusta), (Echinodermata) 

 (in collaboration with A. L. COLWIN) 



b. Normal and experimental development. Saccoglossus (Enteropneusta) 

 (in collaboration with A. L. COLWIN) 



CONAWAY. C. H. B.S.. Ph.D.. — Dept of Zool.. Univ. of Missouri. 



COLUMBIA. Mo., U.S.A. 

 a. Development and morphology of the ovary. (Talpidae, Insectivora) 

 CONINCK. L. A. P. De Dr Sc, Prof. — Lab. voor Zool.. Afd. Morphol., 



Universiteitstraat 14, GENT, Belgie 



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