a Study of nuclear differentiation and specific activities by means of nuclear transplantation. 



Ambystoma mexicanum (Urodela) 

 b La cinetique cellulaire au cours de la segmentation; modalites, determinisme, signification. 



Ambystoma mexicanum (Urodela) 

 SIGOT, M. Dr.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la 

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



a Morphogenese du tube digestif en culture in vitro, specialement ultrastructure et 



enzymologie de l'estomac. Gallus spec. (Aves) (avec M. F. SlGOT) 

 SIGOT (LUIZARD), Mrs. M. F. Lic.es Sci. — Inst. d'Embryol. et Teratol. Exper. du 



C.N.R.S., 49bis Av. de la Belle Gabrielle, 94 NOGENT-sur-MARNE, France 

 a Cancerogenese chimique du foie, etudiee en culture organotypique. Rattus norvegicus 



(Rodentia) 

 b Ultrastructure et enzymologie de l'estomac de l'embryon. Gallus gallus (Aves) (avec M. 



SIGOT) 

 SILSN, L. K. P. Fil.Dr., Prof. — Zool. Inst., Univ. of Stockholm, Radmansgatan 70 A, Box 



6801, S-113 86 STOCKHOLM, Sweden 

 a Embryology. (Bryozoa) 



SIMKISS, K. Ph.D., Prof. — Dept. of Zool. and Comp. Physiol., Queen Mary Coll., LON- 

 DON E.l, England 

 a Respiratory acidosis and acid-base balance in embryos. (Aves) 

 b Movement of Ca 45 through the embryos in eggs subjected to carbon dioxide in the air. 



Gallus domesticus (Aves) 

 SIMON, M. I. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O.Box 109, LA 



JOLLA, Calif. 92037, U.S.A. 

 a Mechanism of molecular assembly in development of subcellular organelles 

 SIMPSON S. B. Ph.D. — Dept. of Anat., Developm. Biol. Center, Case Western Reserve 



Univ.. 2109 Adelbert Rd., CLEVELAND, Ohio 44106, U.S.A. 

 SINCLAIR, J. G. Ph.D., Prof. (Emer.) — Dept. of Anat., Med. Branch, Univ. of Texas, 



GALVESTON, Tex. 77550, U.S.A. 

 a Development of vertebral vascular pattern in embryos. Stenella coeruleoalbus (Cetacea) 

 b Development of central nervous system and receptors. Tursiops truncatus, Stenella 

 coeruleoalbus, Eschrichtius gibbosus, Physeter catodon (Cetacea), Callorhinus ursinus 

 (Pinnipedia) 

 SINGER. M. Ph.D., Prof. — Dept. of Anat., Developm. Biol. Center, School of Med., Case 

 Western Reserve Univ., 2119 Abington Rd., CLEVELAND, Ohio 44106, U.S.A. • 



a Regeneration. (Amphibia) 



b The neurotrophic control of limb regeneration. Triturus viridescens (Urodela) 

 SINGER, R. D.Sc, Prof. — Dept. of Anat., Div. of Biol. Sci., Univ. of Chicago, 1025 East 



57th St., CHICAGO, 111. 60637, U.S.A. 

 a General embryology Hystvix africaeaustralis (Rodentia), Homo sapiens (Primates) 

 SINGER (ALTBEKER), Mrs. R. Ph.D. — Endocrinol. Unit of the Rogoff-Wellcome Med. 



Research Inst., Beilinson Hosp., PETAH-TIKVA, Israel 

 a Histone content of developing ovaries. Bos taurus (Artiodactyla) 

 SINGH, I. Ph.D., Prof. — Dept. of Anat., Med. Coll., ROHTAK, India 

 a Asymmetry in muscle and bone weight in limbs of fetuses. Homo sapiens (Primates) 

 SINGH, J. B. M.Sc. — Dept. of Biochem., Fac. of Sci., Allahabad Univ., ALLAHABAD-2, 



U.P., India 

 a Lipid metabolism and characterization of phospholipids during development from embryo 

 till young adult (thin layer and gas-liquid chromatography). Philosamia ricini (Lepidop- 

 tera) (with R. PANT and G. Ch. NAUTIYAL) 

 SINGH, R. P. Ph.D. — Dept. of Anat., Univ. of W.Ontario, LONDON, Ont., Canada 

 SINITSINA, Miss V. F. — Lab. of Developm. Cytogenet, Inst, of Developm. Biol., Acad. 



of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW 117133, U.S.S.R. 

 a DNA synthesis and cell cycles during neural retina regeneration. Triturus vulgaris, T. 



cristatus (Urodela) (with O. G. STROEVA and V. I. MITASHOV) 

 SIRAKAMI, K. I. D.Sc, Prof. — Dept. of Developm. Biol., Zool. Inst., Kyoto Univ., 

 Kitashirakawa. Sakyo-ku, KYOTO, 606 Japan • 



SIRLIN. J. L. Dr.nat.sci., Prof. — Dept. of Anat., Med. Coll., Cornell Univ., 1300 York Ave., 

 NEW YORK, NY. 10021, U.S.A. • 



a Functional correlation of transfer RNA in the embryo and placenta. Mus musculus (Roden- 

 tia) 

 SJOLTE BYSKOV, Mrs. A. G. — Finsen Lab., Finsen Inst., 49 Strandboulevard, DK-2100 



COPENHAGEN, Denmark 

 SJQSTRAND, F. S. M.D., Ph.D., Prof. — Dept. of Zool., Univ. of California, LOS 



ANGELES, Calif. 90024, U.S.A. 

 SKALKO, R. G. Ph.D. — Embryol. Lab., Birth Defects Inst., N.Y. State Dept. of Health, 84 



Holland Ave.. ALBANY, N.Y. 12208, U.S.A. 

 a Experimental teratogenesis in early stages: maternal and embryonic metabolism of 

 teratogens (fluorouracil, 5-bromodeoxyuridine, methotrexate); development of model 

 systems for teratogenesis (Echinoidea), Mus musculus (Rodentia) 



167 



