a Experiments on relations between endocrine system and regeneration, maturation and metamor- 

 phosis. Platynereis dumerilii (Polychaeta) 



b Control of medusa formation, induction of metamorphosis in larvae and vegetative buds. Cassio- 

 pea andromeda (Scyphozoa) 



HOGAN, Ms. B. L. M.; Ph.D. - Mill Hill Labs., Imp. Cane. Res. Fund, Burtonhole Lane, Mill Hill, 

 LONDON NW7 IAD, England 



a Control of gene expression and cell interaction during preimplantion and early postimplantation 

 development; cell culture of isolated tissues, and appearance of membrane proteins. Mus musculus 



(Rodentia) . „ , ,. 



b Control of gene expression in terato carcinoma cells in tissue culture. Same species as a, and Homo 



sapiens (Primates) 

 HOGE, J. H. C; Drs. - Dept. of Devi. Plant Biol., State Univ. of Groningen, Biol. Ctr., Kerklaan 30, 



9751 NN HAREN (Gr.), Netherlands 

 a Genome activity during development. Schizophyllum commune (Basidiomycetes, Fungi) 

 HOHL, H. R.; Dr.sc.nat., Prof. - Cytol. Lab., Inst, of Plant Biol., Univ. of Zurich, Zollikerstr. 107, 



8008 ZURICH, Switzerland 

 HOLM, K. A .; Ph.D., Prof. (Emer.) - Inst . of Zool., Uppsala Univ., Box 56 1 , 75 1 22 UPPSALA, Sweden 

 a Experimental embryology. (Araneida) 

 HOLTER, H.; Ph.D., Prof. (Emer.) - Biol. Inst., Carlsberg Found., 16 Tagensvej, 2200 COPENHAGEN 



N, Denmark -Tr.i^tT 



HONEGGER, T. G.; Dr.phil. - Zool. Inst, der Univ. Zurich, Winterthurerstr. 190, 8057 ZURICH, 



Switzerland 

 a Ultrastructure and cytochemistry of oogenesis, spermatogenesis and fertilization. (Hydrozoa; 



Scyphozoa) 

 HOPERSKAYA, Ms. O. A.; Cand.biol.sci. - Inst, of Devi. Biol., USSR Acad, of Sci., Vavilov St. 26, 



MOSCOW 117334, USSR 

 a Isolation and purification of lens-mducing and melanogenic factors. Rana temporaria, Xenopus 



laevis (Anura) . 



b Transdifferentiation of retinal and iris pigment epithelium into lens. Same species as a (with 



G. V. LOPASHOV) 

 HORDER, T. J.; Ph.D. - Dept. of Hum. Anat., Univ., South Parks Rd., OXFORD 0X1 3QX, England 

 a Control of orderly nerve connections in embryonic development and in regeneration, especially 



in the optic nerve ; assessment of the concept of neural specificity ; the potentialities for regenera- 

 tion of nerve fibres in the central nervous system. Carassius auratus (Teleostei), various spp. 



(Amphibia), Rattus spec, Oryctolagus cuniculus (Mammaha) 

 b Mechanisms of pattern formation in general; lens regeneration as a model for control of specific 



states of cellular differentiation 

 HORNBY, Ms. J. E.; Ph.D. - Dept. of Zool., Univ. of Reading, Whiteknights Park, READING RG6 



2 AJ, England 

 a Development and karyotype using a lethal mutant. Mesocricetus auratus (Rodentia) 

 b Differentiation of coat pattern using a longhaired mutant. Same species as a 

 HORST, G. van der - A.R.C. Inst, of Anim. Physiol., Anim. Res. Station, 307 Huntingdon Rd., 



CAMBRIDGE CB3 OJQ, England 

 a 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 fertiUzing 



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

 HORST ADIUS, S.; Ph.D., Prof. (Emer.) - Inst, of Zool., Uppsala Univ., Box 561, 751 22 UPPSALA, 



Sweden 

 a Effects on larvae of factors isolated from sea urchin eggs and swine mucosa. (Echinoidea) 

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



DHl '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 lym- 

 phoid organ maturation). Xenopus laevis (Anura) 

 HORVATH, Ms. C; M.D., Assoc.Prof. - Lab. d'Embryol. et de Cytogenet., Fac. de Med. Saint- 



Antoine, 27 rue Chaligny, 75571 PARIS Cedex 12, France 

 a Teratogenesis. Rattus rattus, Mus musculus, Mesocricetus auratus (Rodentia) 

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



c Teratogenic action of inhibitors of cholesterol synthesis. Mus musculus, Rattus rattus (Roden- 

 tia), Oryctolagus cuniculus (Lagomorpha) 

 d Teratogenesis by irradiation. Same species as b 

 HOSBACH, H.; Ph.D. Div. of Cell and Devi. Biol., Zool. Inst., Univ. Bern, Sahlistr. 8, 3012 BERN, 



Switzerland 

 a Hemoglobin transition in relation to metamorphosis. Xenopus laevis (Anura) (with R. WEBER) 

 HOUILLON, C; D.Sc, Prof. - Lab. de Biol. Anim., Univ. Paris VI (P. et M. Curie), 4 place Jussieu, 



75230 PARIS Cedex 05, France 

 a Xenogreffes de gonades; consequences sur remission de pontes heterologues. (Urodela) 

 b Differenciation sexuelle des chimeres obtenues par greffes embryonnaires. (Urodela) 

 c Inversion du sexe par action de la temperature. Pleurodeles waltl (Urodela) 

 HOUSSAINT, Ms. E. - Lab. de Biol, du Devi., Univ. de Nantes, 2 rue de la Houssiniere, 44072 



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) 



53 



