b Physiological gradients and polarity control (kinetic studies of macromolecule precursors,. 



Dugesia dorotocephala (Turbellaria) 

 c Differential and sequential gene activation during regeneration (cell proliferation and 



enzymes of nucleotide metabolism). Dugesia dorotocephala (Turbellaria) 

 d Variations in enzyme activity during early development (thymidine kinase, uridine kinase, 



ribonucleotide reductase) correlated with changes in mitotic index and variation in cell 



cycle; special emphasis on primary induction. Rana pipiens (Anura) 

 e Chondrogenesis in vivo. Mesocricetus auratus (Rodentia) 

 f Relation of mitotic activity and DNA synthesis to differentiation. Mesocricetus auratus 



(Rodentia) 

 g Oogenesis in vivo. Mesocricetus auratus (Rodentia) 

 h Non-mitotic DNA synthesis. Mesocricetus auratus (Rodentia) 

 COZETTE, P. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 



NANCY, France 

 CRACIUN, Mrs. O. L.Sc. — Cat. de Biol.. Inst. Medico-Farmaceutic, Str. Pasteur 6. CLUJ, 



Rumania 

 a Affrontation d'organes embryonnaires in vitro. Mus rattus (Rodentia) 

 h Infuence de la vitamine B12 sur la regeneration du foie. Mus musculus (Rodentia) 

 CRAIG, D. A. Ph.D. — Dept. of Entomol., Univ. of Alberta, EDMONTON. Alta.. Canada 

 a Descriptive embryology. Anopheles stephensi, Gymnopais spec, Neocurupira chiltoni, 



Simulium venustum (Nematocera, Dipfera) 

 CRAIG, G. B. Dr. — Dept. of Biol., Univ. of Notre Dame, NOTRE DAME, Ind. 46556. 



U.S.A. 

 a Pupal development and adult fertility as affected by deoxyriboside base analogues applied 



topically at onset of pupation. (Nematocera, Diptera) (in collaboration with J. A. M. 



BROWN) 

 CRAIGMYLE, M. B. L. M.D. — Dept. of Anat., Univ. Coll. of S. Wales & Monmouthshire, 



Newport Rd., CARDIFF, Wales, U.K. 

 CRAWFORD, R. B. Ph.D., Prof. — Dept. of Biol.. Trinity Coll.. HARTFORD, Conn. 06106. 



U.S.A. 

 a The relationship of the synthetic pathways of adenosine triphosphate to morphogenesis and 



differentiation. Fundulus heteroclitus (Teleostei) , Ambystoma maculatum (Urodela) 

 b The kinetics of RNA synthesis during early embryogenesis, studied particularly in relation 



to energetics metabolism. Fundulus heteroclitus (Teleostei), Ambystoma maculatum (Uro- 

 dela) 

 c Activation of hexokinase activity in embryos. Ambystoma maculatum (Urodela) 

 d Relationship of free amino acid pool to protein synthesis in embryos. Fundulus heteroclitus 



(Teleostei), Ambystoma maculatum (Urodela) 

 CRIPPA. M. M.D. — 1st. di Anat. Comp.. Univ. di Palermo, Via Archirafi 20, 90123 



PALERMO. Italy 

 a Patterns of gene activity during early development. Xenopus laevis (Anura) 

 CRISTEA. Miss M. M.D. — Cat. de Biol., Inst. Medico-Farmaceutic. Str. Pasteur 6, CLUJ. 



Rumania 

 a Influence d'alcool ethylique sur le developpement du foie embryonnaire (histochimie et 



biochimie). Mus rattus (Rodentia) 

 CROISILLE. Y. Dr. — Inst. d'Embryol. et Teratol. exper. du CN.R.S., 49bis Av. de la 



Belle Gabrielle. 94-NOGENT-sur-MARNE, France 



— Lab. d'Embryol, exper. du Coll. de France, 1 1 Place M. Berthelot, PARIS Ve, France • 

 a Developmental, kinetic and immunological studies of enzymes (lactic dehydrogenases. 



hypoxanthine dehydrogenase, esterases) in different tissues. Callus gallus (Aves) 

 b Immunohistological studies of the first appearance of organ-specific proteins during kidney 



differentiation. Gallus gallus (Aves) 

 CROIZAT, B. Dr.3e cycle — Centre de Recherches sur la Nutrit. du C.N.R.S.. 9 rue Emile, 



92 BELLEVUE, France 

 CROWELL, P. S. Ph.D.. Prof. — Dept. of Zool.. Indiana Univ., BLOOMINGTON, Ind. 



47401, U.S.A. • 



CRUZ, A. R. M.D., Ph.D. — Dept. de Morfol. Hum. Func. e Aplic. Fac. de Med. de Ribeirao 



Preto. Univ. de Sao Paulo. Caixa Postal 301, RIBEIRAO PRETO, S.P.. Brazil 

 a Histochemistry of developing neurons. (Vertebrata) (in collaboration with R. AZOUBEL) 

 b Allometric growth of some organs. Rattus rattus (Rodentia) 

 c Nuclear size classes in nerve cells. Mus musculus (Rodentia) 

 d Allometric growth of thyroidectomized animals. Rattus rattus (Rodentia) (in collaboration 



with S. lUCIF) 

 e Allometric growth of the eye in hemispherectomized animals. Rattus rattus (Rodentia) (in 



collaboration with R. AZOUBEL and S. lUCIF) 

 f Effect of hemispherectomy on the thyroid gland. Rattus rattus (Rodentia) (in collaboration 



with R. AZOUBEL and S. lUCIF) 

 CRUZ (DE LOSADA), Mrs. M. V. de la M.D. — Dept. de Embriol.. Inst. Nac. de Cardiol.. 



Av. Cuauhtemoc nr. 300, MEXICO 7. D.F.. Mexico 



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