BieBla 



a. Nucleic acid metabolism during gametogenesis, embryogenesis and 



regeneration; studies carried out with the aid of analogues of purines 



and pyrimidines, and with radioisotope-labeled nucleic acid derivatives. 



Rana pipiens (Anura) 

 BIELANSKA (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 



(Artiodactyla) and other spp. (Vertebrata) 

 BIELIAVSKY, N. Lic.en Sci.Zool. — Lab. de Morphol. anim., Univ. libre 



de Bruxelles. 1850 Chaussee de Wavre. BRUXELLES-Auderghem, 



Belgique 



a. Incorporation de precurseurs radioactifs dans les oeufs en segmentation. 

 Pleurodeles Waltlii (Urodela) 



b. Incorporation de precurseurs radioactifs dans les hybrides letaux. Bufo 

 arenarum 9 x Rana temporaria S (Anura) 



BIER, K. Dr.rer.nat., Prof. — Zool. Inst, der Univ. Munster, Badestr. 9. 



44 MONSTER (Westf.), Deutsche Bundesrepublik 

 BIERNE. J. — Lab. de Biol, gener., Fac. des Sci.. B.P.347. REIMS (Marne). 



France 



a. Development of ovaries after decapitation. Lineus ruber (Anopla, 

 Nemertini) 



b. Transplantation and regeneration (somatic and germinal). Lineus spp. 

 (Anopla, Nemertini) 



c. Experimental studies of regenerative rhynchogenesis (grafts, organo- 

 typic culture, inhibitory action of various substances). Lineus ruber 

 (Anopla), Amphiporus spec. (Enopla, Nemertini) 



BIGGELAAR. J. A. M. v.d. M.Sc. — Zool. Lab., State Univ. of Utrecht, 

 Janskerkhof 3, UTRECHT, Netherlands 



a. Nucleic acid metabolism during early developmental stages. Limnaea 

 stagnalis (Gastropoda) 



b. Synthesis of proteins during early developmental stages. Limnaea stag- 

 nalis (Gastropoda) 



BIGGERS, T. D. Ph.D.. F.R.C.V.S.. Prof. — King Ranch Lab. of Reproduc- 

 tive Physiol. .School of Veter. Med.. Univ. of Pennsylvania, 25th and 

 Locust Streets. PHILADELPHIA 4, Pa.. U.S.A. 



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



b. Culture of eggs. (Mammalia) 



c. Nutrition of embryonic cartilage. (Vertebrata) 



d. Reproduction and embryology of wild animals. (Mammalia) 



BIJTEL. Miss J. H. Dr.Sc, M.D.. M.I.I.E. — Dept. of Anat. and Embryol.. 

 State Univ. of Groningen, Oostersingel 69. GRONINGEN. Nether- 

 lands 



a. Experiments concerning the factors which determine the normal course 

 of the outgrowing pronephric duct. Ambystoma mexicanum. Triturus 

 taeniatus, Xenopus laevis (Amphibia) 



b. Development and phylogenetic origin of the columella auris. Ambystoma 

 mexicanum, Triturus taeniatus, Xenopus laevis (Amphibia) 



c. Development of the naso-lacrimal duct. Xenopus laevis (Anura), Mus 

 musculus (Rodentia) 



24 



