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



COPENHAGEN 0, Denmark 

 JERKA-DZIADOSZ, Ms. M.; Dr.nat.sci. - Dept. of Cell Biol., M. Nencki Inst, of Exper. Biol., Polish 



Acad, of Sci., Pasteur St. 3, 02-093 WARSZAWA, Poland 

 a Surface organelle pattern regulation. Urostylidae (Ciliata) 

 b Development of complex ciliary structures in regenerating cells (electron microscopy). Parauro- 



styla weissei (Cihata) 

 c Ultrastructure of surface organelles in "janus" mutant. Tetrahymena thermophila (Ciliata) 

 JIRiCKA, Z.; M.D., Ph.D. - Inst, of Pharmacol., Czech. Acad, of Sci., Albertov 4, 128 00 PRAHA 2, 



Czechoslovakia 

 a Normal and pathological histology and histochemistry of implantation and placentation. Homo 



sapiens (Primates), (Rodentia) 

 b Influence of drugs and bacterial toxins on implantation and placentation. Same species as a 

 JIRSOVA, Ms. 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). Oryctolagus cuniculus (Lagomorpha) 

 b Electron microscopy and cytochemistry of tubal epithelium differentiation. (Rodentia; Carnivora), 



Homo sapiens (Primates) 

 JOHANNISSON, R.; Dr. - Inst, fur Pathol., Med. Hochschule, Ratzeburger Allee 160, 2400 LUBECK, 



BRD (Germany) 

 a Meiosis in males. Mus spp. (Rodentia) 

 b Trisomic tissues. Same species as a 

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



Scotland, UK 

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



spec. (Rodentia), Homo sapiens (Primates) 

 JOHNEN,Ms. A. G.; Dr.phil., Prof. - Zool. Inst, der Univ., Weyertal 119,5 KOLN 41, BRD (Germany) 

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



mexicanum (Urodela) 

 b Die Bedeutung des Zeitfaktors beim Induktionsvorgang. Dieselben Arten wie a 

 c Untersuchungen iiber die Kompetenzverhaltnisse beim Ektoderm. Ambystoma mexicanum, Tritu 



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

 d Wechselwirkung zwischen Ektoderm und Mesoderm in Gastrula und Neurula. Dieselben Arten wie 



c 

 e Mass-effects in primary induction process. Same species as c 



JOHNSON, D. R.; Ph.D. - Dept. of Anat., School of Med., Univ. of Leeds, LEEDS LS2 9JT, England 

 a Electron microscopy of abnormal tissues. Mus musculus (Rodentia) 

 b Biochemistry of achondroplastic mutants. Same species as a 

 c Mathematical analysis of growth process using multivariate analysis. Various spp. 

 d Limb growth in vitro. Same species as a 

 JOHNSON, M. H.;Ph.D. - Dept. of Anat., Univ. of Cambridge, Downing St., CAMBRIDGE CB2 3DY, 



England 

 a Surface properties of gametes and early embryos (specific probes, e.g. lectins, antibodies, etc.). 



Mus musculus (Rodentia) 

 b Early development studied with sensitive micro-methods for determination of protein synthetic 



patterns in whole or microsurgically dissected normal and mutant embryos. Same species as a 

 c Developmental commitment and spatial relationship of cells in early embryos studied with inter- 

 specific chimaeras and antigenic markers. Mus musculus, Rattus spec. (Rodentia) 

 JONCZY, J.; M.Sc. - Zool. Dept., Jagellonian Univ., ul. Karasia 6, 30-060 KRAKOW, Poland 

 a Oogenesis. Tyrophagus putrescentiae (Acaridae, Acari) 

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



BIRMINGHAM B15 2TJ, England 

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



EH9 3JN, Scotland, UK 

 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 trans- 

 cription and translation 

 c Location of polyadenylated messenger RNAs by in situ hybridization of poly-U(H3) and mRNA 



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



spp. (Primates) 

 d Cloning of cDNA of myogenic cells in E.coli plasmid systems 

 JONES, R. - A.R.C. Inst, of Anim. Physiol., Anim. Res. Station, 307 Huntingdon Rd., CAMBRIDGE 



CB3 OJQ, England 

 a Changes in spermatozoa from the time of leaving the testis to egg penetration: 1 . changes in the 



metaboUsm of spermatozoa in relation to the translation of energy into motility and the main- 

 tenance of cell integrity; 2. activity of enzymes at different stages of maturation and the distri- 

 bution of various enzymes, particularly those probably concerned with fertilization. (Mammalia) 

 b Methods of extending the time during which spermatozoa retain the fertilizing ability (e.g. by 



deep-freezing) and the effects of modifications of the male and/or female tract on fertilizing 



ability of inseminated spermatozoa (e.g. capacitation). (Mammalia) 

 c Mechanism of action of steroid hormones, at the molecular level, with respect to their control 



of specific gene expression in sex accessory tissues. (Mammalia) 



57 



