ontogenesis of the central nervous system. (Vertebrate) 

 b Elaboration of an appropriate method for testing the teratogenic activity of drugs. Callus 



domesticus ( Aves). Rattus norvegicus, Mus musculus (Rodentia) 

 c Embryotoxic effects of normal and pathological blood serum of different species including man. 



Callus domesticus (Aves) 

 d Analysis of the teratogenic action of histone and histone fractions. Gallus domesticus (Aves), Mus 



musculus (Rodentia) 

 JENSEN, P. V. M.Sc. - Inst, of Gen. Zool., Univ. of Copenhagen, 15 Universitetsparken, 2100 



COPENHAGEN 0, Denmark 

 a Ultrastructural changes in metamorphosing hearts. Calliphora erythrocephala (Diptera) 

 b DNA amount and DNA synthesis in the individual cells of the metamorphosing heart. Same 



species as a 

 JINNEROT, D. P. A. Fil.mag. - Zool. Inst, Univ. of Uppsala, Box 561, 75122 UPPSALA 1, Sweden 

 JIRSOVA, Miss Z. M.D. - Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, 128 00 



PRAHA 2, Czechoslovakia 

 a Egg transplantation (electron microscopy and cytochemistry of egg transport and implantation in 



experimental conditions). (Mammalia) 

 b Electron microscopy and cytochemistry of tubal epithelium differentiation. (Rodentia; Carni- 



vora), Homo sapiens (Primates) 

 JOHANNISSON, R. Dr. - Inst, fur Allgem. Biol., Univ. Diisseldorf, Ulenbergstr. 127-129, 4000 



DUSSELDORF, B.R.D. (Germany) 

 a The synthetic capacity and the structure of oocytes and nurse cells; the deposition of yolk 



protein in the oocyte. Daphnia magna (Cladocera, Crustacea) 

 b Gene physiology, Y chromosome. Drosophila spp. (Diptera) 



c Genetic regulation of differentiation; male germ line cells. Drosophila spp. (Diptera) 

 JOHN, H. - Inst, of Anim. Genet., Univ. of Edingburgh, West Mains Rd., EDINBURGH EH9 3JN, 



Scotland, U.K. 

 a Biosynthesis of contractile proteins during myogenesis in vitro. Mus musculus, Rattus spec. 



(Rodentia), Homo sapiens (Primates) 

 JOHNEN, Miss A. G. Dr.phil., Prof. - Zool. Inst, der Univ., Weyertal 119, 5 KOLN 41, B.R.D. 



(Germany) !SDB 



a Die Wirkungsspezifitat abnormer Induktoren in der Entwicklung. Triturus vulgaris, Ambystoma 



mexicanum (Urodela) 

 b Die Bedeutung des Zeitfaktors beim Induktionsvorgang. Same species as a 

 c Untersuchungen iiber die Kompetenzverhaltnisse beim Ektoderm. Ambystoma mexicanum, 



Triturus vulgaris, T. alpestris, T. helveticus (Urodela) 

 JOHNSON, D. R. Ph.D. - Dept. of Anim. Genet., Univ. Coll. London, Wolfson House, 4 Stephenson 



Way, LONDON NW1 2HE, England 

 a Electron microscopy of abnormal tissues, brain biochemistry and neuroendocrinology of animals 



carrying mutant genes. Mus musculus (Rodentia) 

 JONCZY, J. M.Sc. - Zool. Dept., Jagiellonian Univ., ul.Krupnicza 50, KRAKOW 2, Poland 

 a Differentiation of primordial germ cells (qualitative and stereological analysis). Tetrodontophora 



bielanensis (Collembola) 

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



BIRMINGHAM B 15 2TJ, England 

 a The effect of maternal age on morphology and development of fertilized eggs. Mus musculus 



(Rodentia) 

 JONES, G. E. Ph.D. - Dept. of Biol., Queen Elisabeth Coll., Univ. of London, LONDON W8 7AH, 



England 

 a Effect of cytochalasin B on electrophoretic mobility and adhesion of embryonic cells. Gallus 



gallus (Aves) 

 b Control of cellular movement and adhesion in haemocytes. Patella vulgata (Gastropoda) 

 c Cell aggregation and sorting out. Hydra spp. (Hydrozoa) 

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



EH9 3JN, Scotland, U.K. 

 a Location and function of reiterated DNA sequences in nuclei and chromosomes studied by in situ 



hybridization of complementary RNA. (Metazoa) 

 b Ultrastructure, biochemistry, and differentiation of myogenic cells, especially processes of 



transcription and translation 

 c Location of polyadenylated messenger RNAs by in situ hybridization of poly-U(H 3 ) and mRNA 



complementary cDNAs. (Insecta), Rattus spec, Mus musculus (Rodentia), Homo sapiens and 



other spp. (Primates) 

 JONES, W. E. Ph.D. - Marine Sci. Labs., Univ. Coll. of N.Wales, MENAI BRIDGE, Anglesey, Wales, 



U.K. 

 a Spore development. (Rhodophyta and other Algae) 



JONG, Miss G. de M.Sc. - Genet. Inst., State Univ., Opaalweg 20, UTRECHT, Netherlands 

 a a-amylase activity during larval development and its influence on competition between strains. 



Drosophila melanogaster (Diptera) 

 JONGH, H. J. de D.Sc. - Dept. of Anat. and Embryol., Univ. of Groningen, Oostersingel 69, 



GRONINGEN, Netherlands 

 a Functional morphology of the head with special reference to larval life and metamorphosis. 



(Anura) 

 b Allometric growth of the eye. Rana pipiens (Anura) 

 c Development of the dentition. (Blenniidae, Teleostei) 



50 



