PEUSNER, Mrs. K. D.; Ph.D. - Dept. of Anat., Jefferson Med. Coll., 1020 Locust St., PHILADEL- 

 PHIA, PA 19107, U.S.A. 

 a Ultrastructural changes preceding and during synaptic development of the axosomatic "spoon 



endings" in the tangential nucleus, a part of the lateral vestibular complex. Gallus gallus (Aves) 

 PHILLIPS, D. M.; Ph.D. - Bionied. Div., The Popul. Council, Rockefeller Univ., York Ave. and 66th 



St., NEW YORK, NY 10021, U.S.A. 

 a Ultrastructure of sperm development. (Invertebrata; Mammalia), Homo sapiens (Primates) 

 PHILLIPS, H. M.; Ph.D. - Dept. of Biol., Univ. of Virginia, Gilmer Hall, CHARLOTTESVILLE, 



VA 22903, U.S.A. 

 a Measurement of intercellular adhesiveness and analysis of morphogenetic movements in cohering 



populations of embryonic cells. Rana pipiens (Anura), Gallus domesticus (Aves) 

 PHILPOTT, G.W.; M.D. - Dept. of Surg., Washington Univ., 4960 Audubon Ave., ST. LOUIS, 



MO 631 10, U.S.A. 

 PIATIGORSKY, J.; Ph.D. - Lab. of Molec. Genet., Natl. Inst, of Child Health and Human Developm., 



Natl. Inst, of Health, Bldg. 6, Rm 333, BETHESDA, MD 20014, U.S.A. 

 a Lens development: 1. protein synthesis; 2. the role of microtubules; 3. synthesis and metabohsm 



of RNA. Gallus domesticus (Aves) 

 PICCIANO, D. J. - Dept. of Zool., Univ. of Minnesota, ST. PAUL, MN 55101, U.S.A. 

 a Nuclear transfer of in vitro cultured and cytologicallv identified renal carcinoma. Rana pipiens 



(Anura) (with R. G. McKINNELL and J. ZAMBERNARD) 

 b Cytogenetics of developmental variants induced by mutagenic substances. Same species as a (with 



R. G. McKINNELL) 

 PIDDINGTON, R. L.; Ph.D., Assoc. Prof. - Dept. of Histol. and Embryol., Sch. of Dent. Med., Univ. 



of Pennsylvania, PHILADELPHIA, PA 19174, U.S.A. 

 a Correlation of glutamyl transferase development with specific structural, biochemical, and 



physiological events during functional maturation of embryonic brain. Gallus domesticus (Aves) 

 PIENKOWSKI, M. M.; M.D., Ph.D., Assoc. Prof. - Dept. of Anat., Michigan State Univ., A519 East 



Fee Hall, EAST LANSING, Ml 48824, U.S.A. 

 a Differentiation of early embryo utilizing developed technique of growing embryos in vitro up to 



organogenesis; effect of cAMP and steroid hormones; cell-cell interactions; cell surface deter- 

 minants. Mus musculus (Rodentia) 

 PIERRO, L. J.; Ph.D., Prof. - Dept. of Anim. Genet., Storrs Agric. Exper. Station, Univ. of 



Connecticut, STORRS, CT 06268, U.S.A. 

 a Chemical teratogenesis. Gallus domesticus (Aves), Mus musculus (Rodentia) i 



b Eye development. Mus musculus (Rodentia) 

 c Developmental genetics. Same species as a 

 PIKO, L.; Ing.Agr., D.V.M. - Developm. Biol. Lab., Vet. Administr. Hosp., SEPULVEDA, CA 91343, 



U.S.A. also: Div. of Biol., Calif. Inst, of Technol., PASADENA, CA 91125, U.S.A. 

 PILAR, G. R.; M.D., Prof. - Regulatory Biol., Biol. Sci. Group, Univ. of Connecticut, STORRS, 



CT 06268, U.S.A. 

 a Formation and function of synapses, and ceU death in sianuha. (Aves) 

 PILKINGTON, J. B.; Ph.D. - Dept. of Zool., Univ. of Otago, DUNEDIN, New Zealand 



No work on developmental biology in progress 

 PIPA, R. L.; Ph.D., Prof. - Div. of Entomol., Univ. of California, BERKELEY, CA 94720, U.S.A. 

 a Endocrine influences on the differentiation of retina and optic lobes in vivo and in vitro. Galleria 



mellonella (Lepidoptera) 

 b Nature of endocrine interactions during metamorphosis. Same species as a, and Periplaneta 



americana (Blattodea) 

 PIPERBERG, J. B.; B.A. - Dept. of Biol., Univ. of Pennsylvania, 4001 Spruce St., PHILADELPHIA, 



PA 19174, U.S.A. 

 a Nuclear binding of cytoplasmic steroid receptor molecules in the retina. Gallus gallus (Aves) 

 PITOT, H. C; M.D., Ph.D. - McArdle Lab. for Cane. Res., Univ. of Wisconsin, 450 N. RandaU Ave., 



MADISON, WI 53706, U.S.A. 

 a RNA template stabilization in differentiation and neoplasia. (Eukaryotes) 

 POCCIA, D. L.; Ph.D. - Div. of Biol. Sci., State Univ. of New York, STONY BROOK, NY 11794, 



U.S.A. 

 a Interrelationships of female pronuclear chromosome cycle (turned on with NH3-buiTers) and 



male pronuclear chromosome cycle (turned on by fertilization), and receptivity of these nuclei to 



mitotic signals. Strongylocentrotus purpuratus, Lytechinus pictus (Echinoidea) 

 b lactors present in centriole containing fractions from sea urchin inducing mitotic spindles and 



parthenogenesis in Xenopus. Lytechinus pictus (Echinoidea), Xenopus laevis (Anura) 

 POIRIER, G. R.; Ph.D. - Dept. of Biol., Univ. of Alabama, Univ. Stat., BIRMINGHAM, AL 35294, 



U.S.A. 

 a Demonstration of natural iniiibitor(s) of acrosomal proteolytic enzymes associated with 



epididymal spermatozoa. Mus musculus (Rodentia) 

 b Morphology and histochemistry of gonadal development in three strains. Same species as a 

 POLLARD, D. R.; Ph.D. - Health Prot. Branch, Health and Welfare Canada, Rm 12A L.C.D.C., 



Tunney's Pasture, OTTAWA, Ont. K 1 A 0L2, Canada ' 



a Expression of embryonic-lethal genotypes in the allophcnic animal. Mus musculus (Rodentia) 

 b Effect in nucleic acid and protein inliibitors on cleavage sta^e embryos in vitro. Same species as a 

 POLLOCK, Ms. C. - M.Sc. - Dept. of Zool., Univ. of Brit. Columbia, VANCOUVER, B.C. V6T 1W5, 



Canada 

 a Food vacuole formation, membrane subunit cycling, developmental genetics. Paramecium aurelia 



(Ciliata) 



70 



