c Development of spinal and cerebral centers. Rana pipiens, R. catesbeiana, Pseudacris nigrita, 



Bufo americanus (Anuca) 

 d Delineation of skin territories of different developmental capacities, especially as indicated 



by gland development. Rana pipiens and other spp. (Anura) 

 KOMINKOVA, Miss E. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 



4, PRAGUE 2, Czechoslovakia 

 a Submicroscopic structure and cytochemistry of Hofbauer cells. Mus rattus (Rodentia), Felis 



domestica (Carnivora), Homo sapiens (Primates) 

 b Histogenesis of the connective tissue cells of chorionic villi. Homo sapi/ens (Primates) 

 KONDO, K. B.Sc. — Dept. of Biophys. and Biochem., Fac. of Sci.. Univ. of Tokyo, 7-3-1 



Hongo, Bunkyo-ku, TOKYO 113, Japan 

 a Reaggregation of dissociated embryonic cells, especially the search for cell-reaggregating 



substances as known in Porifera. (Echinoidea), Tritums pyrrhogaster (Urodela) 

 h Adhesiveness of cells: 1. mechanism of adhesion. 2. changes in adhesiveness accompanying 



development and their significance. (Echinoidea). Triturus pyrrhogaster (Urodela) 

 KONIGSBERG, I. R. Ph.D., Prof. — Dept. of Biol., Univ. of Virginia, Gilmer Hall, CHAR- 

 LOTTESVILLE, Va. 22903, U.S.A. 

 a Cytodifferentiation of skeletal muscle in clonal cell culture. Gallus domesticus (Aves) 

 h Dependent differentiation of muscle cells upon products of fibroblast biosynthesis. Gallus 



domesticus (Aves) 

 KONIJN, Th. M. Ph.D. — Hubrecht Lab. (Internat. Embryol. Inst.), Uppsalalaan 1. Uni- 



versiteitscentrum "De Uithof", UTRECHT, Netherlands 

 a Chemotaxis, cell aggregation and differentiation. (Acrasiales) 

 h Adenosine-3',5'-monophosphate and other cyclic nucleotides during morphogenesis in lower 



and higher organisms 

 KONYSHEV, V. A. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the 



U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. 

 a Tissue growth promoting and inhibiting substances: isolation, chemical characterization, 



action on tissues and relation of chemical nature to action mechanism. Gallus domesticus 



(Aves) 

 KONYUKHOV, B. V. Dr.biol.Sci. — Phenogenet. Lab., Inst, of Gen. Genet., Acad, of Sci. 



of the U.S.S.R., Profsojuznay St. 7 (1), MOSCOW B-133, U.S.S.R. 

 a Developmental study of mutational effects of genes which lead to eye and skeletal ab- 

 normalities. Mus musculus (Rodentia) 

 h Study of lens proteins by electrophoresis. Mus musculus (Rodentia) 

 c Study of mechanisms of eye and skeletal abnormalities by organ culture. Mus musculus 



(Rodentia) 

 d Methods for the prevention of some inherited abnormalities by administering drugs. Mus 



musculus (Rodentia) 

 KORKIA (NIJARADZE), Mrs. I. K. Cand.biol.sci. — Dept. of Anim. Embryol., Inst, of 



Zool., Acad, of Sci. of the Georgian S.S.R.. TBILISI, U.S.S.R. 

 KORN, H. F. Dr.rer.nat. — I. Zool. Inst., Naturw. Fak., Friedrich-Alexander Univ., Univer- 



sitatsstr. 19, 852 ERLANGEN, W.Germany 

 a Development. (Nemathelminthes) 

 b The postlarval brain. (Polychaeta) 



KORNELIUSSEN, H. K. — Anat. Inst., Univ. of Oslo, Karl Johansgt. 47, OSLO, Norway 

 KORNGUTH, S. E. Ph.D., Prof. — Depts. of Neurol, and Physiol. Chem., Coll. of Med.. 



Univ. of Wisconsin, MADISON, Wis. 53706, U.S.A. 

 a Changes in histone distribution during the development of the nervous system. (Vertebrata) 

 b Proteins of the synaptic complex and development of synaptic contacts in nervous tissue. 



( Vertebrata) 

 KOROTCHKIN, L. I. Dr.med. sci.. Prof. — Inst, of Cytol. and Genet., NOVOSIBIRSK 90, 



U.S.S.R. 

 a Experimental morphology, cytochemistry and cytophysiology of the developing nervous 



system. Ambystoma mexicanum (Urodela). Rattus norvegicus. Mus musculus (Rodentia) 

 h Development of the pigment cell. Ambystoma mexicanum (Urodela). Rattus norvegicus, 



Mus musculus (Rodentia) 

 KOROTKOVA, Mrs. G. P. Cand.biol.sci. — Dept. of Embryol., Leningrad Univ.. Mende- 



leevsky St. 5, LENINGRAD B-164. U.S.S.R. 

 a Comparative study of the processes of regeneration, asexual reproduction and somatic 



embryogenesis. Leucosolenia complicata, Sycon lingua, Halichondria panicea and other 



spp. (Porifera) 

 KOSCIELSKI, B. D.Sc. — Zaklad Zool. Ogolnej, Inst, of Zool.. Univ. of Wroclaw, ul. 



Sienkiewicza 21, WROCK-AW, Poland 

 a Polyembryony. Dendrocoelium spec. (Turbellaria) 

 KOSHIDA, Y. D.Sc. — Dept. of Biol., Coll. of Gen. Educ, Osaka Univ., Toyonaka. 



OSAKA, 560 Japan 

 a Cytological studies on the presence of recognizable sex-associated differences. Gallus do- 

 mesticus. Cofurnix coturnix japonica, Meleagris gallopavo (Aves) 



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