BERTALANFFY, F. D. Ph.D.. Prof. — Dept. of Anat., Fac. of Med. and Dentistry, Univ. 



of Manitoba, 750 Bannatyne Ave., WINNIPEG 3. Manitoba. Canada 

 a Rates of cell division of neoplastic cell populations. Rattus rattus, Mus muscutus (Roden- 



tia) 

 b Mitotic rates of regenerating liver parenchyma. Rattus rattus (Rodenfia) 

 c Cell renewal and cytodynamics of normal cell populations. Rattus rattus (Rodentia) 

 BERTMAR, G. Fil.Dr. — Dept. of Biol.. Univ. of Umea. UMEA 6. Sweden 

 a Developmental morphology of the snout. (Dipnoi; Amphibia) 

 h Developmental morphology of dermal bones and scales. (Pisces) 



c Experimental developmental morphology of the olfactory organ. Salmo spec. (Teleostei) 

 BERTOLINI. B. Dr.Biol.Sci. — 1st. di Anat. Comp. "Battista Grassi". Fac. di Sci.. Univ. di 



Roma. Via A. Borelli 50. ROMA. Italia 

 a Ultrastructural cytochemistry of the various cell types in the oviduct during the repro>- 



ductive cycle and under experimental conditions. (Amphibia) 

 b Subcellular localization of acid hydrolases in the acrosome of spermatozoa. Paracentrotus 



lividus (Echinoidea), Tritutus cristatus (Urodela), Rattus noruegicus (Rodentia) 

 BETCHAKU. T. Ph.D. — Dept. of Biol., Yale Univ.. NEW HAVEN. Conn. 06520. U.S.A. 

 a Studies in cell association. Various species 

 BETTANIN (BELGRANO). Mrs. S. Dr.Nat.Sci. — 1st. di Zool., Univ. di Genova, Via 



Balbi 5. GENOVA, Italia 

 a Embryo development of a parthenogenetic marine form. Penilia avirostris (Cladocera. 



Crustacea) (in collaboration with N. DELLA CROCE) 

 b Development of the sexual forms. Penilia avirostris (Cladocera. Crustacea) (in collabo- 

 ration with N. DELLA CROCE) 

 BEYNON. A. D. B.D.S. — Dept. of Oral Anat., Sutherland Dental School, Univ. of New- 

 castle upon Tyne, Northumberland Rd.. NEWCASTLE upon Tyne 1. England 

 a Development of the root and periodontal ligament of the molar teeth. (Rodenfia) 

 BHAGAVAN. N. V. Ph.D. — Dept. of Anat., School of Med.. Univ. of Hawaii, 2538 The 



Mall. HONOLULU. Hawaii 96822. U.S.A. 

 a Molecular biology of cell differentiation and hormone action. (Bacteria: Protozoa: Roden- 

 tia) 

 BHATTACHERJEE. S. M.Sc — Dept. of Zool., Presidency Coll.. CALCUTTA 12. West 



Bengal. India 

 BHUSSRY. B. R. D.D.S., Ph.D.. Prof. — Dept. of Anat.. School of Med.. Georgetown Univ., 



3900 Reservoir Rd.. N.W.. WASHINGTON, D.C. 20007. U.S.A. 

 a Effect of sodium fluoride on developing teeth. Rattus rattus (Rodentia) 

 b Effect of vitamin D deficiency on developing bone (high calcium-phosphorus ratio diet). 



Rattus rattus (Rodentia) 

 BIBORSKI, J. — Dept. of Reprod. Physiol., Inst, of Zootechn., Al.Mickiewicza 24-28, KRA- 



KoW, Poland 

 a Development of mammary gland, epididymis and testis. (Mammalia) 



BIEBER, S. Ph.D. — Richard L. Conolly Coll., Long Island Univ., 385 Flatbush Ave. Exten- 

 sion. BROOKLYN, N.Y. 11201, U.S.A. 

 BIELAl<JSKA (OSUCHOWSKA), Mrs. Z. Dr., Prof. — Veter. Inst, of Histol. and Embryol., 



High School of Agricult.. Grochowska 272. WARSZAWA. Poland 

 a Histochemical studies on differentiation of gonads. Sus domestica (Artiodactyta) and other 



spp. (Vertebrata) 

 BIELKA. H. Dr.rer.nat.habil. — Inst. f. Zellphysiol., Deutsche Akad. der Wissensch. zu 



Berlin, Lindenberger Weg 70, 1115-BERLIN-Buch. Deutsche Demokr. Republik 

 a Isolation and physico-chemical characterization of DNA during early erabryogenesis. 



Ascaris lumbricoides var. suis (Nematoda) (in collaboration with Miss I. SCHULTZ) 

 b Structure and function of ribosomes in early embryogenesis. Ascaris lumbricoides var. 



suis (Nematoda) (in collaboration with F. GRUMMT) 

 • BIER, K. Dr.rer.nat., Prof. — Zool. Inst, der Westf. Wilhelms-Univ.. Badestr. 9. 44 



MUNSTER, Deutsche Bundesrepublik 

 BIERNE. J. D.E.S. — Lab. de Biol, gener., Fac. des Sci., B.P. 347. 51-REIMS. France 

 a Endocrine factors in sex differentiation and maturation. Lineus ruber (Anopla. Nemerfini) 

 h Experimental research on germinal regeneration. (Lineidae. Nemertini) 

 c Origin of regeneration cells. (Lineidae, Nemertini) 

 d Consequences of heteroplastic grafts between species which are of unequal regenerative 



power. (Lineidae, Nemertini) 

 BIGGELAAR, J. A. M. v.d. M.Sc — 2x>ol. Lab., State Univ. of Utrecht, Janskerkhof 3, 



UTRECHT. Netherlands 

 a Nucleic acid metabolism during early developmental stages. Limnaea stagnalis (Gastropoda) 

 h Synthesis of proteins during early developmental stages. Limnaea stagnalis (Gastropoda) 

 BIGGERS, J. D. Ph.D.. Prof. — Div. of Popul. Dynamics. School of Hygiene and Public 



Health. The Johns Hopkins Univ.. 615 North Wolfe St., BALTIMORE, Md. 21205, U.S.A. 

 a Organ culture of fallopian tubes and ovaries. (Mammalia) 

 h Culture and metabolism of eggs. (Mammalia) 

 c Oocyte maturation. (Asteroidea), Homo sapiens and other spp. (Mammalia) 



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