b Interaction of normal and mutant genotypes in development of chimaeras produced by 



microsurgery and microinjection. Mus musculus (Rodentia) 

 c Investigation of X-chromosome markers by transfer of single cells from early female 



embryos heterozygous for X-linked genes to host blastocysts of a distinct genotype. Mus 



musculus (Rodentia) 

 GARGOUiL, Y. M. Dr.es Sci., Prof. — Lab. de Physiol. Anim., Fac. des Sci., Univ. de 



Poitiers, 40 av. du Recteur Pineau, 86 POITIERS, France 

 a Electrophysiology of embryonic heart and muscles; study of the development of membrane 



properties. Ambystoma tigrinum (Urodela), Cavia porcellus, Rattus norvegicus (Rodentia) 

 b Histology and electron microscopy of the embryonic heart. Rattus norvegicus (Rodentia) 

 GARROD, D. R. Ph.D. — Dept. of Biochem., Univ. of Leicester, LEICESTER LEI 7RH, 



England 

 a Morphogenetic movement and cell adhesion. Dictyostelium discoideum (Acrasiales) 

 GARROD, Mrs. E. M. F. — Dept. of Zool., University of British Columbia, VANCOUVER 



8, B.C., Canada 

 a The effect of transplanted epidermis from the hind limb field on regeneration of the fore- 

 limb: structure of muscle, cartilage, and bone. Triturus viridescens (Urodela) (with C. V. 



FINNEGAN) 

 GARWEG, G. Dr.med. — Anat. Inst, der Univ., Abt. fur Neuroanat, Nussallee 10, 53 



BONN, W.Germany 

 GASC, J. M. Lic.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la 



Belle Gabrielle, 94 NOGENT-sur-MARNE, France 

 a X-ray damages on embryonic intestine at biochemical level. Gallus domesticus (Aves) 

 b Incorporation of tritiated thymidine in gonads in organ culture of normal animals and 



after treatment with x-rays or steroid hormones. Gallus domesticus. Anas platyrhynchos 



(Aves) 

 GASSER, F. Dr.Biol. — Lab. de Biol. Gener., Univ. Paul-Sabatier, 118 Route de Narbonne, 



31 TOULOUSE 04, France 

 a Genetical aspects of protein differentiation in embryonic stages. Pleurodeles waltlii 



(Urodela) (with J. C. BEETSCHEN) 

 GASSER, R. F. Ph.D., Prof. — Dept. of Anat., Med. Center, Louisiana State Univ., 1542 



Tulane Ave., NEW ORLEANS, La. 70112, U.S.A. 

 a Tongue development. Mus musculus, Rattus spec. (Rodentia), Homo sapiens (Primates) 

 b Atlas of developmental stages. Homo sapiens (Primates) 

 GASTON, J. D. Ph.D., Prof. — Dept. of Anat., Developm. Biol. Center, Western Reserve 



Univ. School of Med., 2119 Abington Rd., CLEVELAND, Ohio 44106, U.S.A. 

 a Nucleic acids and protein synthesis during development (ribosomes). Rana pipiens, 



Xenopus laevis (Anuca) 

 GATEFF (ZOLLIKOFER) , Mrs. E. A. Ph.D. — Developm. Biol. Lab. and Center for 



Pathobiol., Univ. of California, IRVINE, Calif. 92664, U.S.A. 

 a Normal and abnormal (neoplastic) development of the nervous system and the imaginal 



discs (tissue culture) . Dcosophila melanogaster (Dipteca) 

 b Analysis of genetical controlled neoplasms. Same species as a 



GATES, A. H. Ph.D. — Div. of Genet., Univ. of Rochester, 260 Crittenden Blvd., ROCHES- 

 TER, N.Y. 14620, U.S.A. 

 a Physiological and genetical mechanisms regulating egg and embryo development. Mus 



musculus (Rodentia) 

 GAUTHIER, Miss G. F. Dr. — Lab. of Cell Biol., Dept. of Biol. Sci., Wellesley Coll., 



WELLESLEY, Mass. 02181, U.S.A. 

 GAY, Miss H. Ph.D., Prof. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich. 



48104, U.S.A. 

 a Molecular structure of chromosomes during genetic activity, especially nucleic acids and 



proteins of heterochromatin and euchromatin (electron microscopy, cytochemistry, auto- 

 radiography, biochemistry) . Drosophila melanogaster (Diptera) 

 GAYER, J. Dr. — Dept. of Biol., Charles Univ., §imkova 870, HRADEC KRALOVfi, 



Czechoslovakia 

 GAZE, R. M. Ph.D. — Developm. Biol. Div., Natl. Inst, for Med. Research, Mill Hill, 



LONDON N.W.7, England 

 a Functional aspects of regeneration of the optic nerve. Xenopus laevis, Rana temporaria 



(Anura) 

 b Cellular changes in tectum and eye after optic nerve section. Triturus cristatus (Urodela) 

 c Functional results of tectal grafting. Carassius auratus (Teleostei) 

 d Development of visual connections in embryos. Xenopus laevis (Anura) 

 GEBHARDT, D. O. E. Ph.D. — Dept. of Obstet. and Gynecol., Academic Hospital, LEI- 

 DEN, Netherlands 

 a Neonatal respiration and metabolism. Ovis aries (Artiodactyta), Homo sapiens (Primates) 

 b Amniotic fluid analysis. Homo sapiens (Primates) 

 GEHRING, W. J. Ph.D., Prof. — , Dept. of Anat., Yale Univ., NEW HAVEN, Conn. 06510, 



U.S.A. 



63 



