a Development of larvae and adults in vivo and in vitro. Microphallus pygmaeus, 



M. similis, Meigymnophallus minutus (Digenea, Trematoda) 

 JAMES, D. A. D.Phil. — Dept. of Biol., Univ. of Saskatchewan, SASKATOON, Sask., 



Canada 

 JAMES, D. W. B.S., Prof. — Dept. of Anat. and Embryol., Univ. Coll. London Gower St 



LONDON WC1E 6BT, England ' 



a In vitro studies of the central nervous system. Gallus domesticus (Aves) 

 JANDIERI, Miss K. M. — Dept. of Biophys., Inst, of Exper. Morphol., Acad, of Sci of the 



Georgian SSR., 51 Kamo St., TBILISI 2, U.S.S.R. 

 a Participation of nuclear and cytoplasmic substances in control of state of DNA in 



chromatin. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) 

 JANS, D. E. Drs. — Muse. Dystrophy Res. Labs., Newcastle Gen. Hosp., NEWCASTLE 



upon Tyne NE4 6BE, England 

 a Measurement of the total nucleolar material (by interference microscopy) and the 



nucleolar RNA (by scanning microdensitometry) in cultured normally differentiating 



myoblasts and in myoblasts cultured from dystrophic muscle. Gallus domesticus (Aves), 



Mus musculus (Rodentia), Homo sapiens (Primates) (with K. F. A. ROSS) 

 JANSEN, J. M.D., Prof.(Emer.) — Anat. Inst., Univ. of Oslo, Karl Johansgate 47, OSLO 1, 



Norway • 



(no embryological work in progress) 

 JANSSENS, P. A. Ph.D. — Dept. of Zool., School of Gen. Studies, Australian Nat. Univ., 



P.O.Box 4, CANBERRA, A.C.T. 2600, Australia 

 a Development of enzyme systems specially those concerned in nitrogen metabolism. Xenopus 



laevis (Anura) 

 JANTOSOVICOVA, Mrs. J. M.V.Dr. — Anat. Inst., Vet.-Med. Fak., Komenskeho 71, 



KOSICE, Czechoslovakia 

 a Morphogenesis of the testis. Ovis aries (Artiodactyla) 

 JANTZEN (WILKENS), Mrs. H. L. M. Dr. — Zool. Inst, der Univ., Berlinerstr. 15, 6900 



HEIDELBERG, W.Germany 

 a Ribonucleic acid populations of embryos during differentiation. Xenopus laevis (Anura) 

 b Synthesis of new RNA populations needed for encystment. Acanthamoeba spec. (Rhizopo- 



da) 

 JARSKAR, R. J. Dr. — Inst, of Zool., Univ. of Gothenburg, Fack, S-400 33 GOTHEN- 

 BURG 33, Sweden 

 a Electron microscopy of the development of the median eminence, neural lobe, and 



adenohypophysis (from 14-day embryo to adult). Mus musculus (Rodentia) (with L. 



EURENIUS) 

 b Electron microscopy of the uptake mechanisms of monoamines and/or their precursors 



during different stages of the development of the median eminence. Mus musculus 



(Rodentia) (with L. EURENIUS) 

 JAYLET, A. Lic.es Sci. —> Lab. de Biol. Gener., Univ. Paul-Sabatier, 118 Route de Nar- 



bonne, 31 TOULOUSE 04, France 

 a Effets des rayons X sur la descendance d'animaux irradies; etude des anomalies 



chromosomiques; mode de transmission des chromosomes remanies; creation de lignes 



homozygotes pour des chromosomes marqueurs. Pleurodeles waltlii (Urodela) 

 b Tetraploidie experimentale. (Urodela) 

 JEL1NEK, R. MUDr., CSc. — Lab. of Plastic Surg.. Dept. of Exper. Teratol., Czechoslov. 



Acad, of Sci., Legerova 61, PRAHA 2, Czechoslovakia 

 a Quantitative changes of tissue, cellular and subcellular structure in normal and pathological 



ontogenesis of the central nervous system. (Vertebrata) 

 b Secondary development of axial structures (origin of neural tube and somites from the 



tail bud, localization of proliferation centers). Gallus domesticus (Aves) 

 c Elaboration of an appropriate method for testing the teratogenic activity of drugs. Gallus 



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

 JENKINSON, E. J. B.Sc. — Dept. Zool., Univ. Coll. of N. Wales, BANGOR, Caerns., 



Wales, U.K. 

 a Experimental embryology and embryo culture in vitro. Mus musculus (Rodentia) 

 JENSH, R. P. Ph.D. — Stein Research Center, Thomas Jefferson Univ., 920 Chancellor St., 



PHILADELPHIA, Pa. 19107, U.S.A. 

 a Effect of combined injections of 2 different teratogenic antisera. Rattus norvegicus 



(Rodentia) 

 b Effect and localization of trypan blue administered in the latter half of gestation; with or 



without teratogenic antisera. Rattus norvegicus (Rodentia) 

 c Effects of x-irradiation on postnatal lifespan (leukemic effects). Mus musculus, Rattus 



norvegicus (Rodentia) --«« 



JINNEROT, D. P. A. Fil.mag. — Inst, of Zool., Univ. of Uppsala, Box 561, S-75122 UPP- 

 SALA 1, Sweden 

 a Ultrastructure of neural crest cells in different developmental stages. Ambystoma spec. 



(Urodela), Gallus domesticus (Aves) 

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



PRAGUE 2, Czechoslovakia 



87 



