JELINEK, R. MUDr., CSc. — Dept. of Histol., Charles Univ.. Albertov 4, PRAGUE 2, 



Czechoslovakia 

 a Quantitative changes of tissue, cellular and subcellular structure in normal and patho- 

 logical ontogenesis of the central nervous system. (Vertebcata) 

 h Secondary development of axial structures (origin of neural tube and somites from the 



tail bud, localization of proliferation centers). Gallus domesticus (Aves) 

 c Elaboration of an appropriate method for testing the teratogenic activity of drugs. Gallus 



domesticus (Aves), Mus norvegicus albus (Rodentia) 

 JIRASEK, J. E. CSc. — Embryol. Lab., Inst, for the Care of Mother and Child, nabn K. 



Marxe 157, PRAHA-Podoli, Czechoslovakia 

 JIRSOVA, Miss Z. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4. 



PRAGUE 2, Czechoslovakia 

 a Egg transplantation (electron microscopic and cytochemical studies of egg transport and 



implantation in experimental conditions). (Mammalia) 

 h Electron microscopy and cytochemistry of tubal epithelium. (Rodentia; Carnivora). Homo 



sapiens (Primates) 

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

 a Development of the splanchnic nerves. Homo sapiens (Primates) 

 h Development of striated muscle of oesophagus. Homo sapiens (Primates) 

 c Ages of ossification of various bones in embryos and adults. Homo sapiens (Primates) 

 d Structure and development of anal sphincters. Homo sapiens (Primates) 

 JOHANSSON, K. B. G. Fil.lic. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 



STOCKHOLM, Sweden 

 a Regulation of enzyme synthesis in cells in tissue culture. 

 JOHN, H. — Inst, of Anim. Genet., King's Bldgs, West Mains Rd., EDINBURGH EH9 3JN. 



Scotland, U.K. 

 JOHNEN, Miss A. G. Dr.phil. Doz. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN- 



Lindenthal, W.Germany • 



a Die Wirkungsspezifitat abnormer Induktoren in der Entwicklung. (Amphibia) 

 h Die Bedeutung des Zeitfaktors beim Induktionsvorgang. Amby stoma spec, Triturus spec. 



(Urodela) 

 c Untersuchungen iiber die Kompetenzverhaltnisse beim Ektoderm. (Urodela) 

 JOHNSON. D. R. Ph.D. — Dept. of Anim. Genet., Univ. Coll. London, Wolfson House, 



4 Stephenson Way, LONDON N.W.I. England 

 a Studies of the relationship of the developing embryo to its surrounding fluids, and the 



way the relationship changes when the embryo is carrying mutant genes. Mus musculus 



(Rodentia) 

 b Electron microscopy of abnormal tissues from animals carrying mutant genes. Mus mus- 

 culus (Rodentia) 

 JOHNSON, E. M. Ph.D., Prof. — Dept. of Anat. Sci., Coll. of Med.. Univ. of Florida, 



GAINESVILLE, Fla. 32601, U.S.A. 

 a The ontogeny of isoenzymes and the influence of teratogenic agents thereon; mechanisms 



of teratogenesis. (Aves) 

 JONES (HOLT), Mrs. E. C. Ph.D. — Dept. of Anat., Med. School, Univ. of Birmingham, 



Edgbaston. BIRMINGHAM 15. England 

 a The effect of maternal age on morphology and development of fertilized eggs. Mas mus- 

 culus (Rodentia) 

 JONES, G. E. B.Sc. — Dept. of Cell Biol., Univ. of Glasgow. GLASGOW W.2. Scotland, 



U.K. 

 a Effect of dielectric constant on the adhesion of embryonic cells. Gallus gallus (Aves) 

 JONES, K. W. Ph.D. — Inst, of Anim. Genet.. Univ. of Edinburgh. West Mains Rd., 



EDINBURGH EH9 3JN. Scotland. U.K. 

 a Small aggregate cultures of embryonic cells. Rana pipiens (Anura) 



b Ultrastructural effects of actinomycin D on cultured embryonic cells. Rana pipiens (Anura) 

 c Molecular "hybridization" studies on cells cultured in vitro (extending current tech- 

 niques of RNA/DNA annealing down to the cellular and tissue level). Rana pipiens 



(Anura) (in collaboration with H. JOHN) 

 d Studies on the behaviour and differentiation of normal and dystrophic myogenic cells i n 



vitro and in vivo. Mus musculus (Rodentia) 

 JONES. O. P. Ph.D., M.D., Prof. — Dept. of Anat., State Univ. of New York at Buffalo, 



318 Capen Hall, BUFFALO, N.Y. 14214, U.S.A. 

 a Embryonic blood cells in the yolk sac. Rattus spec. (Rodentia) 

 b Electron microscopy of hepatic hematopoiesis. Rattus spec. (Rodentia), Homo sapiens 



(Primates) 

 JONES. R. F. Ph.D. — Dept. of Biol. Sci., State Univ. of New York at Stony Brook, 



STONY BROOK, N.Y. 11790, U.S.A. 

 a Physiology and biochemistry of development and differentiation during vegetative growth, 



asexual reproduction and gametogenesis. Chlamydomonas reinhardtii (Volvocales, Chloro- 



phyceae) , ,u • > 



b Control of vegetative and reproductive development. Marchantia polymorpha (Hepaticae) 



86 



