STAPLES, R. E.; Ph.D. - Natl. Inst, for Environm. Health Sci., N.I.H., P. 6. Box 12233, RESEARCH 



TRIANGLE PARK, N.C. 27709, U.S.A. 

 a Zygote development (physiological, biochemical). Oryctolagus cunicukis (Lagomorpha), Rattus 



norvegicus, Mus musciilus (Rodentia) 

 b Development of methods for screening of teratogenic factors. (DMSO, I-DOPA, microwave, CO, 



alcohol, pentobarbital, dichlorvos, tenuazonic acid, thalidomide). Oryctolagus cimiculus 



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

 c Effects of combinations of factors (e.g. drug and stress) on development, from gamete to adult 



(morphology, biochemistry, behaviour). (Mammalia) 

 d Developing an environmental teratology information center (ETIC) - collecting extracts from 



the world's literature that present data relating to the teratogenic potential of environmental 



agents. (Aves; Mammalia) 

 STAY, Miss B.; Ph.D., Assoc. Prof. - Dept. of Zool., Univ. of Iowa, lOWA-City, lA 52242, U.S.A. 

 a Secretion of the brood sac and structure and physiology of the pleuropodia in relation to the 



nutrition of the viviparous embryo, compared to a non-viviparous species. Diploptera punctata, 



Pycnoscclus surinamensis (Blattodea) 

 b The composition and control of brood sac secretion in a viviparous form. Diploptera punctata 



(Blattodea) 

 STEFFEK, A. J.; D.D.S., Ph.D. - Dept. of Anat.. Univ. of Chicago, 1025 East 57th St., CHICAGO, 



IL 60637, U.S.A. also: Am. Dent. Assoc, 211 E. Chicago Ave., CHICAGO, IL. 60611, U.S.A. 

 STEFFENSEN, D. M.; Pli.D., Prof. - Dept. of Genet, and Developm., Univ. of Illinois, 515 Morrill 



Hall, URBANA, IL 61801, U.S.A. 

 a Cytogenetics and RNA:DNA in situ hybridization. Drosophila spec. (Diptera), Homo sapiens 



(Primates) 

 b Nuclear differentiation. Same species as a 

 STEIN, Miss K. F.; Ph.D., Prof. (Emer.) - Dept. of Biol. Sci., Clapp Lab., Mount Holyoke CoU., 



SOUTH HADLEY, MA 01075, U.S.A. 

 STEINBERG, M. S.; Ph.D., Prof. - Dept. of Biol., Princeton Univ., PRINCETON, NJ 08540, U.S.A. 

 STEINHARDT, R. A.; Ph.D., Assoc. Prof. - Dept. of Zool., Univ. of Calif., BERKELEY, CA 94720, 



U.S.A. 

 STERN, H.; Ph.D., Prof. - Dept. of Biol., B-022, Univ. of CaUf., San Diego, LA JOLLA, CA 92093, 



U.S.A. 

 a Meiotic development. Trilhuni erectum, LiUum longitlorum, Tuhpa gesneriana, Vicia faba 



(Angiospermae) 

 STERN, R.; M.D. - Lab. of Biochem., Natl. Inst, of Dent. Res., Natl. Inst, of Health, BETHESDA, 



MD 20014, U.S.A. 

 a Synthesis of collagen in the developing embryo; isolation of mRNA for collagen; characterization 



of mRNA and control of translation of collagen by tRNA; isolation of prolyl and glycyl tRNA 



preceding and during collagen formation and from non-collagenous tissue. Gallus domesticus 



(Aves) 

 b Proline metabolism in the developing embryo; synthesis of hydroxyprolinc and control of bio- 

 synthetic pathway for proUne; temporal relationship to collagen synthesis and deposition. Same 



species as a 

 STEVENS, L. C; Ph.D. - The Jackson Lab., BAR HARBOR, ME 04609, U.S.A. 

 a Histogenesis of testicular teratoma (strain 129). Mus musculus (Rodentia) 

 b Developmental genetics. Same species as a 



c The development of teratomas from parthenogenetically activated ovarian eggs. Same species as a 

 d Parthenogenesis. Same species as a 

 STEVENSON, J. ROSS; Ph.D., Prof. - Dept. of Biol. Sci., Kent State Univ., KENT, OH 44242, 



U.S.A. 

 a Study of control of epidermal chitin biosynthesis for the developing cuticle by chemical assays 



and radiotracers. Orconectes sanborni, Q. obscurus (Decapoda, Crustacea) 

 STILES, Miss Sh. S.; M.Sc. - Biol. Lab., Natl. Mar. Fish. Serv., Middle Atlantic Coastal Fish. Ctr., 212 



Rogers Ave., MILFORD, CT 06460, U.S.A. 

 a Cytogenetic studies of irradiation effects on parthenogenetic eggs and cleavage stages "fertiHzed" 



with genetically damaged sperm. Crassostrea virginica (Lamellibranchia) 

 b Use of doubling and mitotic inhibiting agents (e.g. colchicine) on early stages. (Mollusca; 



Teleostei) 

 STOCK, A. t; Ph.D., Prof. - Dept. of Zool., Sch. of Biol. Sci., Univ. of New England, ARMIDALE, 



N.S.W. 2351, Australia 

 STOCKDALE, F. E.; M.D., Ph.D., Assoc. Prof. - Dept. of Med., Sch. of Med., Stanford Univ., 



Rm S-025, STANFORD, CA 94305, U.S.A. 

 a Mechanisms of skeletal muscle differentiation, with special reference to DNA synthesis and cell 



division. Gallus domesticus (Aves) 

 b Mechanisms of hormone-dependent differentiation in mammary gland tissue in vitro, with special 



reference to DNA synthesis and cell division. Mus musculus (Rodentia) 

 STOCUM, D. L.; Ph.D., Assoc. Prof. - Dept. of Genet, and Developm., Univ. of Illinois, 515 Morrill 



Hall, URBANA, IL 61801, U.S.A. 

 a Morphogenesis during regeneration. Ambystoma maculatum, Triturus viridescens (Urodela) 

 b Control of ribonucleic acid and protein synthesis by tissue interactions during regeneration. Same 



species as a 

 c Cell recognition and adhesion during embryology. Gallus domesticus (Aves) 



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