c Migration of cranial neural crest cells: nature and origin of extracellular matrix; biochemistry of 



cresl cells cultured ill vitro: biochemical factors that may control differentiation. (Rodentia) 

 PRAY T R Ph.D., Prof. Dept. of Biol. Sci.. Univ. of S. California, University Park, LOS 

 \\i,l I I S, Calif. 90007, U.S.A. 



.i Development ol the gametophytes and juvenile stages oi the sporophytcs (Cheilantheae, Pteri- 



daceae, I ilicinae) 

 b Development of the vein systems of leaves. Anemia spec, Marsilea spec, Cyrtomium spec, 



Acrostichum spec, and other spp. (Filicinae) 

 c Factors controlling planes of cytokinesis in early gametophyte development. Cheilanthes spp. 



Pteridaceae, Filicinae) 

 PRK'l Miss D ■ Prof (1 nier.) Dept. oi' Biol., Div. of Biol. Sci., Univ. of Chicago, 1101 E. 57th St., 



CHICAGO', 1L 60637, U.S.A. ISDB 



I'R/^BVLSKl R. J.; Ph.D., Assoc Prof. - Dept. of Anat., Sch. of Med., Case Western Reserve Univ., 



CLEVELAND, Ohio 44106, U.S.A. 

 a Regulation o\' myotube formation in vitro of embryonic skeletal muscle: reversible suppression 



by COj tension. Gallus spec. (Aves) 

 b Isolation of fusion sites from skeletal myoblasts utilizing concanavalin-A. Same species as a 

 c Localization of mvosin genes on the chromosome by in situ hybridization. Same species as a 

 PUG1N, E. Inst, de Embriol., Univ. Austral de Chile, Casilla no. 567, VALD1VIA, Chile 

 a Auditory and vertebral cartilage differentiation in young embryos (xenoplastic grafts). (Reptilia) 

 b Normal development, and ultrastructural relationship between the pharyngeal pouch of the adult 



male and the integument of the tadpole. Rhinoderma darwini (Anura) 

 PLRKO, J.; Ph.D., Assoc. Prof. - Dept. of Zool., Univ. of W. Ontario, LONDON, Ont. N6A 3K7, 



Canada 

 a Regulation and role of RNA and protein synthesis in early embryogenesis. (Teleostei) 

 QUADEER, A.;B.S. - Dept. of Anat., Med. Coll., NAGPUR-3, M.S., India 

 a Morphology and histochemistry of metanephros development to stage 40. Gallus domesticus 



(Aves) (with P.N. DUBEY) 

 QUATRANO, R. S.; Ph.D., Assoc. Prof. - Dept. of Bot., Oregon State Univ., CORVALLIS, OR 



97331, U.S.A. 

 QUEVEDO, W. C, Jr.; Ph.D., Prof. - Div. of Biol, and Med. Sci.. Brown Univ., PROVIDENCE, R.I. 



02912, U.S.A. 

 a Genetic regulation and developmental variations of multiple forms of tyrosinase in melanocytes. 



Mus musculus (Rodentia) 

 b Developmental variations in the isozymes of lactate dehydrogenase in the skin. Same species as a 

 RADHAKRISHNAN, N.; M.Sc. - Dept. of Zool., Fac of Sci., M.S. Univ. of Baroda, BARODA-2, 



India 

 a Tail regeneration in the adult. Mabuya carinata (Lacertilia) 

 RAE, P. M. M.; Ph.D. - Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, 



U.S.A. 

 a DNA and protein components of constitutive heterochromatin; nucleic acid-protein interaction; 



constitutive heterochromatin in early embryogenesis; position-effect variegation. Drosophila 



melanogaster, D. virilis (Diptera), Mus musculus (Rodentia) 

 b Synthesis and distribution of unusual deoxyribonucleotides. Gyrodinium cohnii and other spp. 



(Dinophyceae) 

 RAFFERTY, K. A., Jr.; Ph.D., Prof. - Dept. of Anat., Univ. of Illinois, P.O. Box 6998, CHICAGO, 



111. 60680, U.S.A. 

 a Longevity and preservation of differentiated function in cultured cells. (Primates and other 



Mammalia) 

 RAISMAN, J. S. - Inst, de Biol., Univ. Nac de Tucuman, Chacabuco 461, S. M. de TUCUMAN, 



Argentina 

 a Fertilization: 1. acrosome reaction; 2. oviducal factors; 3. vitelline coat. Bufo arenarum, Lepto- 



dactylus chaquensis (Anura) 

 RAMACHANDRAN, A. V.; M.Sc. - Dept. of Zool., Fac. of Sci., M.S. Univ. of Baroda, BARODA-2, 



India 

 a Tail regeneration in the adult. Mabuya carinata (Lacertilia) 

 RAMIREZ, O. C; M.D., Ph.D. - Dept. de Bioquim., Centro de Invest, y de Estudios Avanzados del 



Inst., Politecn. Nac, Apartado Postal 14-740, MEXICO 14, D. F., Mexico 

 a Isolation and characterization of serum factors involved in early stages of myogenesis in vitro. 



Gallus gallus (Aves) 

 b Characterization of factors obtained from conditioned media responsible for myoblast prolifera- 

 tion in vitro. Same species as a 

 RAMUS, J. S.; Ph.D., Assoc. Prof. - Dept. of Biol., Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. 

 a Biogenesis of cell surface polysaccharides in a unicellular organism. Porphyridium aerugineum 



(Rhodophyceae) 

 RANG A RAO, K.; Ph.D., Assoc. Prof. - Fac. of Biol., Univ. of W. Florida, PENSACOLA, Fla. 32504, 



U.S.A. 

 a The responses of chromatophores of zoea, megalopa and adult to purified chromatophorotropins. 



Uca pugilator (Decapoda, Crustacea) 

 b A study on the control of pigmentation in regenerating appendages. Uca pugilator, Cambarellus 



shufeldti (Decapoda, Crustacea) 

 c Comparative study of the effects of various ecdysones on regeneration of appendages. Uca 



pugilator, U. minax, Clibanarius vittatus (Decapoda, Crustacea) 

 RAO, K. V.; Ph.D. - Dept. of Zool., Univ. of Delhi, DELHI 1 10007, India 



70 



