d Manufacture and cultureof embryos by virus-assisted fusion of oocytes. Mus musculus, Oryctolagus 

 cuniculus, Felis domestica. Bos taurus, Ovis aries, Sus scrofa domesticus, Macaca mulatta (Mam- 

 malia) 

 SPAZIANI, E.; Ph.D., Prof. - Dept. of Zool., Univ. of Iowa, lOWA-City, lA 52242, USA 

 a Mechanism of ovarian and testicular hormone action on growth and development of reproductive 



tissues: uterus, seminal vesicles, prostate. Rattus norvegicus (Rodentia) 

 b Biosynthesis of growth and differentiating hormone (ecdysone) by the Y-organ; variations ac- 

 cording to molt cycle. Cancer spec. (Decapoda, Crustacea) 

 c Hormonal control of calcium transport in oviduct. Callus domesticus (Aves) 

 SPENCER, A. N.; Ph.D. - Dept. of Zool., Univ. of Alberta, EDMONTON, Alta. T6G 2E9, Canada 

 a Coupling and electrical excitability of embryonic epithelia. various spp. (Teleostei) 

 b Developmental physiology of "giant" axonal syncytia in nerve rings (electron microscopy, micro- 

 electrode recording). Polyorchis penicillatus (Hydrozoa) 

 SPFRELAKIS, N.; Ph.D., Prof. - Dept. of Physiol., Sch. of Med., Univ. of Virginia, CHARLOTTES- 

 VILLE, VA 22903, USA 

 a Membrane properties of myocardial cells and skeletal muscle during embryonic development. 



Callus domesticus (Aves), Rattus spec. (Rodentia) 

 b PJectrophysiology of heart cells and whole hearts cultured in vitro. Same species as a 

 c Control of membrane properties, e.g., effect of mRNA. Same species as a 



d Ultrastructure of cardiac and skeletal muscle at different stages of embryonic and postnatal deve- 

 lopment. Same species as a, and Cavia porceUus, Mus musculus (Rodentia) 

 SPERRY, R. W.; Ph.D. - Div. of BioL, Calif. Inst, of Technol., PASADENA, CA 91125, USA 

 a Development of nerve connections. (Vertebrata) 



SPIEGEL, Ms. E. S.; Ph.D., Prof. - Dept. of Biol. Sci., Dartmouth Coll., HANOVER, NH 03755, USA 

 a Cell adhesion; cell motility; cell reaggregation. Arbacia punctulata, Lytechinus pictus (Echinoidea) 

 SPIEGEL, M.; Ph.D., Prof. - Dept. of Biol. Sci., Dartmouth CoU., HANOVER, NH 03755, USA 

 a Cell adhesion; cell reaggregation. Arbacia punctulata, Lytechinus pictus (Echinoidea) 

 SPIEGELMAN, M.; Ph.D.. "^ Devi. Genet. Lab., Mem. Sloan-Kettering Cane. Ctr., 1275 York Ave., 



NEW YORK, NY 10021, USA 

 a Fine structure of normal and mutant embryos. Mus musculus (Rodentia) 

 b Cell surface structures in early embryos. Same species as a 

 c Developmental potencies of cells of normal and mutant embryos in chimeras and in vitro. Same 



species as a 

 SPIROFF, B. E. N.; Ph.D. - Dept. de Biol., Loyola Univ., 6525 N. Sheridan Rd., CHICAGO, IL 60626. 



USA 

 a Effects of thaUdomide on development. (Aves) 

 b Function and structure of the epiphysis. (Aves) 

 c Lymphocytes and epiphysis. (Aves) 

 SPITZER, N. C; Ph.D. - Ctr. for Devi. Biol. B-022, Univ. of CaUf., San Diego, LA JOLLA, CA 92093, 



USA 

 a Sensitivity to neurotransmitters of primary sensory (Rohan-Beard), and motor neurons in vivo; 



and of neurons in vitro, stages 20-50. Xenopus laevis (Anura) 

 b Hormonal dependence of physiological and anatomical changes involved in cell death during 



development. Same species as a 

 c Effect of blockade of the early calcium action potential on neuronal development in vitro. Same 



species as a 

 d Anatomical and physiological development of identified neurons from identified (DUM) neuro- 

 blasts of embryos (intracellular recording dye injection, iontophoresis). (Orthoptera) 

 SPYKER, J. M.; Ph.D. - Dept. of Pharmacol., Univ. of Arkansas for Med. Sci., 4301 West Markham, 



LITTLE ROCK, AR 72201, USA 

 SRIVASTAVA, G. K.; M.Sc. - Dept. of Biochem., Fac. of Sci., Allahabad Univ., ALLAHABAD 



211002, India 

 a Some enzymes (lipase, proteolytic, trehalase, phosphatases, aminotransferases) and metabohtes 

 (proteins, total free amino acids, lipids, nucleic acids, carbohydrates) in some tissues (midgut, 

 intestine, malpighian tubules, wing buds) during larval-pupal development. Philosamia ricini, 

 Antheraea mylitta (Lepidbptera) 

 b Some enzymes (phosphatases, aminotransferases, hpases) and metabohtes (proteins, amino acids, 



lipids and phosphorus) in the imaginal disc of diapausing pupa. Antheraea mylitta (Lepidoptera) 

 SRIVASTAVA, H. C; M.S., Prof. - Dept. of Anat., Med. Coll., BARODA 390001, India 

 a Palate closure and production of cleft palate by physostigmine. Rattus spec. (Rodentia) 

 b Postnatal histochemical changes in the fibre types of skeletal muscle. Same species as a 

 c Postnatal development of adrenaUne and noradrenaline secreting cells of adrenal medulla. Same 



species as a 

 STAAL, G. B.; Dr., Ir. - Zoecon Corp., 975 Cahfornia Ave., PALO ALTO, CA 94304, USA 

 a Influence of insect hormones, synthetic analogs, and hormone antagonists on growth, meta- 

 morphosis, reproduction, and embryogenesis. (Orthoptera; Homoptera;Coleoptera; Lepidoptera; 

 Diptera) 

 STANLEY, J. G^; Ph.D., Assoc. Prof. - Dept. of Zool., Univ. of Maine, ORONO, ME 04473, USA 

 a Induction of artificial gynogenesis and polyploidy. Salmo salar, Salvelinus fontinalis (Teleostei) 

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



TRIANGLE PARK, NC 27709, USA 

 a Development of methods for screening of teratogenic factors. Oryctolagus cuniculus (Lago- 



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

 b Effects of combinations of factors (e.g. drug and stress) on development (morphology). (Mam- 

 maUa) 



87 



