c Germ cell segregation and migration. Species as b 



d Capillary cndoUielial cell cheniotaxis and morphogenesis in vitro. Rat, Cow, Man 



POPE W F • M.Sc. - Meat Anim. Res. Ctr., Sci. and Educ. Administr., US Dept. of Agric, P.O.Box 



166, CLAY CENTER, NE 68933, USA 

 a Factors influencing the intrauterine distribution and survival of preattached embryos. Pig 

 PORZIG, Ms. E. F.; Ph.D. - Div. of Oncol. (S-025), Med. Ctr., Stanford Univ., STANFORD, CA 



94305, USA , . ^ 



a Growth control, mitogens, cell surface receptors; effects of mammary stimulatmg factor on 



growth of cell variants which lack epidermal growth factor receptors. (Mammalia) 

 b Development of the conjuctival papillae und scleral ossicles. Chicken 

 POSTLETHWAIT, J. H.; Ph.D. - Dept. of Biol., Univ. of Oregon, EUGENE, OR 97403, USA 

 a Mechanism of action of homoeotic mutants. Drosophila melanogaster (Diptera) 

 b Heritability of sex determination. Same species as a 

 c Hormonal and genetic control of oogenesis. Same species as a 

 d Hormonal regulation of acid phosphatase activity. Sanies species as a 

 POTTER, I. C; Ph.D., Prof. Sch. of Environm. and Life Sci., Murdoch Univ., MURDOCH, WA 



6153, Australia 

 a Physiology, ecology and biochemistry of larvae; metamorphosis. Geotria austrahs, Lampetra 

 fluviatilis, L. planeri (Cyclostomata) ^„ ^-,0-,, ,Tn» 



POTTER, Ms. S. W.; Ph.D. - Dept. of Zool., Oregon State Univ., CORVALLIS, OR 97331, USA 

 a Cell interactions during blastocyst implantation in vitro. Mouse 

 POULSON, D. F.; Ph.D., Prof. - Dept. of Biol., Kline Biol. Tower, Yale Univ., P.O.Box 6666, NEW 



HAVEN, CT 06511. USA 

 a Mid-gut: genesis and differentiation. Drosophila melanogaster (Diptera) 

 b Chromosomal control of differentiation. Species as a 

 c Neurogenesis in normal and genetically deficient embryos. Species as a 

 d Maternally inherited sex-ratio disturbances of development. Species as a, and Drosophila 



bifasciata, D. willistoni, D. equinoxialis, D. robusta, D. paulistorum (Diptera) 

 e Developmental genetics. Species as a 

 POURANY, Ms. A.; Ph.D. - Dept. of Anat., Jawaharlal Inst, of Postgrad. Med. Educ. and Res., 



PONDICHERRY 605006, India 

 a Endocrine pancreas: 1. abnormal during gestation (histogenesis and morphometry); 2. histology 



and histometry in different pathological conditions. Man 

 PRAHLAD, K. V.; Ph.D., Prof. - Dept. of Biol. Sci., Northern Illinois Univ., DeKALB, IL 60115, 



USA 

 a Biochemical and morphological effects of thyroid hormones on embryonic tissues. Xenopus 



lacvis (Anura) 

 b Effect of pesticides on embryogenesis and initiation of endocrine function, part, in the thyroid. 



Species as a, and Ghicken 

 PRASAD M. R. N.; Ph.D., Prof. - Dept. of Zool., Univ. of Delhi, DELHI 1 10007, India 

 PRASAD, T. K. - Dept. of Biosci., Sardar Patel Univ., VALLABH VIDYANAGAR 388120, Gujarat, 



India 

 PRATT R M • Ph.D. - Craniofac. Devi. Sect., Lab. of Developm. Biol, and Anomalies, Natl. Inst, of 



Dent. Res., N.I.H., Bldg. 30, Rm 405, BETHESDA, MD 20014, USA 

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



ANGELES, CA 90007, USA 

 PRITCHARD, E. T.; Ph.D., Prof. - Dept. of Oral Biol., Fac. of Dent., Univ. of Manitoba, WINNIPEG, 



Man. R3E 0W3, Canada 

 a Arvlesterases and their relation to secretion in growing salivary gland. Rat 

 b Relation of sulfoUpid metabolism to age and secretory stimuli in salivary gland. Rat 

 PRZYBYLSKI, R. J.; Ph.D. - Dept. of Anat., Develop. Biol. Ctr., Case Western Reserve Univ., 2119 



Abintong Rd., CLEVELAND, OH 44106, USA 

 a Cell surface protcins-glycoproteins during skeletal myogenesis in culture. Chicken 

 b Ontogeny of insulin binding and biological effects during skeletal myogenesis. Chicken 

 c Mechanism of myoblast fusion and effects of heterokaryon formation. Chicken 

 d Cardiac hypertrophy in embryos produced by hypothermia. Chicken 

 PUCCIARELLI, H. M.; D.Sc.Nat. - Lab. de Invest. Morfol., Cat. Ilia de Anat., Univ. Nac. de La Plata, 



60 y 1 20. 1 900 LA PLATA, Buenos Aires. Argentina 

 a Magnitude of cranial shape and size differences between sexes and between strains (Wistar and 

 Holtzman); time at which the differences become significant (craniometry, 21-49 days 

 postnatal). Rat 

 b Delay in development of the major functional cranial components due to malnutrition (21-49 



days postnatal). Rat 

 PUGIN, E.; Dr.Sc.Nat. - Inst, de EmbrioL, Univ. Austral de ChUe, CasUla no. 567, VALDIVIA, Chile 

 a Process of morphophysiological adaptation in development. Chilean species (Anura) 

 b Structural, comparative and functional aspects of spermatoza (TEM, SEM). (Anura) 

 c Changes of spermatozoa associated with passage through the jelly envelopes: fusion and evolution 



of their different parts in the egg (TEM, SEM). (Anura) 

 QUATRANO, R. S.: Ph.D., Prof. - Dept. of Bot.and Plant Pathol., Oregon State Univ., CORVALLIS, 



OR97331,USA 

 a Control of protein and RNA synthesis during early embryogenesis. (Gramineae) 

 b Biochemistry and ultrastructure of polarity induction, cell wall formation and cellular 

 differentiation in embryos. Fucus distichus, F. vesiculosus (Phaeophyceae) 



69 



