and the dependence of their appearance of the duration of induction. Rana temporaria (Anura) 

 b Inductive interactions of the cells of differentiating retina by means of combinations of cells of 



the eye rudiment and gastrula ectoderm. Rana temporaria (Anura) (with G. V. LOPASHOV) 

 c Specific assimilatory induction by lens epithelial cells in gastrula ectoderm. Rana temporaria 



(Anura) 

 d Change in the spectrum of inductive abilities in the course of the differentiation of retina. Rana 



temporaria, Xenopus laevis (Anura) (with A. A. SOLOGUB) 

 e Conditions of the initiation of development and the positioning of axial rudiment in the early 



blastoderm. Leuciscus bergi (Cyprinidae), Epiplatys shaperi (Cyprinidontidae, Teleostei) 

 HORNBLAD, P. Y. M.D. - Lab. of Teratol., Karolinska Inst., S-104 01 STOCKHOLM 60, Sweden 

 a Experimental studies on closure of the ductus arteriosus and causes of its patency. Oryctolagus 



cuniculus (Lagomorpha), Mus musculus, Rattus norvegicus, Cavia porcellus (Rodentia), Sus 



domesticus, Ovis aries (Artiodactyla) 

 HORNBY, Miss J. E. B.Sc. - Dept. of Zool., Univ. of Reading, Whiteknights Park, READING RG6 



2AJ, England 

 a Adhesion of embryonic cells. Gallus domesticus (Aves) 

 HORSTADIUS, S. Fil.Dr., Prof. (Emer.) - Zool. Inst., Univ. of Uppsala, Box 561, 75122 UPPSALA 



1, Sweden ISDB 



a Determination in the egg: the gradients and the processes behind them, particularly the effect on 



embryonic development of morphogenetic substances isolated from the eggs. Paracentrotus 



lividus (Echinoidea) 

 HORSTMANN, E. Dr.med. et phil., Prof. - Anat. Inst, der Univ. Hamburg, Martinistr. 52, 2000 



HAMBURG-Eppendorf, W.Germany 

 HORTON, J. D. Ph.D. - Dept. of Zool., Univ. of Durham, Science Labs., South Rd., DURHAM DH 1 



3LE, England 

 a The role of the thymus in the ontogeny of immunity and the mechanism of graft rejection and 



tolerance (alloimmune responses of animals thymectomized at extremely early stages of 



lymphoid organ maturation). Xenopus laevis (Anura) 

 HORVATH, Miss C. M.D. - Inst, of Histol. and Embryol., Med. Univ., Tuzolto u. 58, BUDAPEST 



IX, Hungary ISDB 



a Teratogenesis. Gallus domesticus (Aves), Rattus rattus, Mus musculus, Mesocricetus auratus 



(Rodentia) 

 b Effect of teratogens on chromosomes. Rattus rattus (Rodentia) 

 HOUILLON. Ch. Dr.es Sc, Prof. - Lab. de Biol. Anim. (2e sect), Univ. de Paris, 12 rue Cuvier, 75 



PARIS Ve, France ISDB 



HOURDRY, J. - Lab. de Biol.-Vertebr., Centre d'Orsay, Univ. de Paris XI, Bat. 441, 91405 ORSAY, 



France 

 a Etude quantitative de quelques hydrolases lysosomiques de Tepithelium intestinal au moment de 



la metamorphose naturelle ou provoquee: electrophorese d'isoenzymes; comportement des acides 



nucleiques (autoradiographie). Discoglossus spec, Xenopus laevis (Anura) 

 HOUSSAINT, Miss E. - Lab. d'Embryol., Univ. de Nantes, 38 Bd.Michelet, B.P.1044, 44037 



NANTES CEDEX, France 

 a Differenciation biochimique des hepatocytes. Gallus gallus (Aves) 



b Etude experimentale du developpement du foie. Gallus gallus (Aves), Mus musculus (Rodentia) 

 c Cultures d'hepatocytes d'embryons. Gallus gallus, Coturnix c. japonica (Aves) 

 HOYES, A. D. Ph.D. - Anat. Dept., St.Mary's Hosp. Med. School, Norfolk Place, LONDON W.2, 



England 

 a Ultrastructure of the chorion laeve and decidua. Homo sapiens (Primates) 

 b Ultrastructure of haematopoiesis in the liver and bone marrow. Homo sapiens (Primates) 

 HRABE, V. RNDr., CSc. - Dept. of Morphol., Inst, of Vertebr. Zool., Czechoslov. Acad, of Sci., 



KvStna 8, BRNO, CZECHOSLOVAKIA 

 HUBER, W. D.Sc, Prof. - Naturhist. Museum, and Zool. Inst, der Univ., Abt. fur Morphol. und Biol. 



der Wirbeltiere, Bernast. 15, 3005 BERN, Switzerland 

 a Biometrie des Schadels. Canis familiaris (Carnivora), Capreolus capreolus, Rupicapra rupicapra 



(Artiodactyla) 

 b Postembryonales Wachstum. Canis familiaris (Carnivora) 

 c Geschlechtszyklus. Rupicapra rupicapra (Artiodactyla) 

 d Fortpflanzung und Geschlechtszyklus. Sciurus vulgaris (Rodentia) 

 e Fortpflanzung und Reproduktionsleistung. Lepus europaeus (Lagomorpha), Canis familiaris 



(Carnivora) 

 HUBERT, J. Dr.es Sci. - Lab. de Biol. Anim., Univ. de Clermont, B.P. 45, 63170 AUBIERE, France 

 a Lignee germinale chez l'embryon, le jeune et l'adulte; etude descriptive et experimentale, 



ultrastructure. Lacerta vivipara, Anguis fragilis (Lacertilia), Vipera aspis (Ophidia) 

 HUCHON, Miss D. E. Dr.es Sci. - Lab. d'Embryol., Univ. Paris VI, 4 place Jussieu, 75230 PARIS 



Cedex 05, France 

 a Serum lipoprotein in relation with yolk formation. Discoglossus pictus (Anura) 

 HUET, C. - Lab. de Biol. Anim., Fac. des Sci., Univ. Paris Sud, 91405 ORSAY, France 

 a Developpement de l'appareil genital masculin et feminin de la larve. Tenebrio molitor 



(Coleoptera) 

 HUET, M. Lab. de Biol. Anim., Fac. des Sci., Univ. Paris Sud, 91405 ORSAY. France 

 a Regeneration (influence des rayons X, du systeme nerveux). Asterina gibbosa (Asteroidea) 

 HULTIN, J. M. T. Fil.Dr. - Wenner-Gren Inst., Norrtullsgatan 16, 113 45 STOCKHOLM, Sweden 



ISDB 

 a Protein and nucleic acid metabolism in early development. Artemia salina (Anostraca, Crustacea), 



47 



