c Total lipid and phospholipid changes during neuronal maturation. Cricetus auratus (Roderi' 

 tia) 



d Immunochemical characteristics of developing brain. Cricetus auratus (Rodentia) 



e Immunochemical characteristics of developing lens tissue. Gallus galtus (Aves) 



f Drug effects on developing nervous tissue. Ambystoma maculatum (Urodela) (in colla- 

 boration with Mrs. F. LaVELLE) 



LAVELLE. C. L. B. Ph.D. — Dept. of Anat., Med. School. Univ. of Birmingham. Edg- 

 baston. BIRMINGHAM 15, England 



a Embryology of the dental cusp pattern. Rattus norvegicus (Rodentia), Homo sapiens 

 (Primates) 



LaVELLE (WILSON). Mrs. F. Ph.D. — Dept. of Anat.. Coll. of Med., Univ. of Illinois. 

 1853. W. Polk St., CHICAGO, 111. 60612. U.S.A. 



a Hormonal control of early sex differentiation. Cricetus auratus (Rodentia) 



h Critical periods in neuronal differentiation. Cricetus auratus (Rodentia) 



c Cytochemical differentiation of nervous tissue. Cricetus auratus (Rodentia) 



d Drug effects on developing nervous tissue. Ambystoma maculatum (Urodela) (in colla- 

 boration with A. LaVELLE) 



LAWSON, Miss K. A. Ph.D. — Hubrecht Lab. (Intemat. Embryol. Inst.). Uppsalalaan 1. 

 Universiteitscentrum „De Uithof", UTRECHT, Netherlands 



a Morphogenesis and functional development of the parotid gland in vivo and i n v i t r o. 

 Rattus rattus (Rodentia) 



h Response of embryonic limb-bone rudiments to thyroid hormones in vitro. Gallus 

 domesticus (Aves) 



LAZARD (HAUBEN), Mrs. L. Dr.es Sci. — Inst. d'Embryol. et Teratol exper. du C.N.R.S., 

 49 bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France 

 — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place M. Berthelot. PARIS Ve, France 



a Limb regeneration, after X-irradiation, and grafts of various tissues and organs. Siredon 

 mexicanum (Urodela) 



LEACH, Ch. M. Ph.D., Prof. — Dept. of Botany & Plant Pathol.. Oregon State Univ., 

 CORVALLIS, Ore. 97331, U.S.A. 



a Light-induced sexual and asexual reproduction. (Fungi) 



LEATHEM, J. H. Ph.D. — Bureau of Biol.Research. Rutgers Univ., NEW BRUNSWICK. 

 N.J. 08903, U.S.A. 



LEBLOND. C. P. M.D., Ph.D., Prof. — Dept. of Anat., McGill Univ., MONTREAL 2. 

 Que.. Canada 



a Development of the thyroid gland. (Vertebrata) 



h The development of bones and teeth as shown on radioautographs with the help of various 

 labeled substances. (Vertebrata) 



LECHENAULT, H. — Lab. de Biol, gener., Fac. des Sci., B.P. 347, 51-REIMS, France 



a Cytochemistry and biochemistry of basic proteins in gametogenesis and regeneration. 

 (Oligochaeta) 



LE DOUARIN, G. H. Dr.es Sci. — Lab. de Physiol, anim. et cellulaire. Fac. des Sci. de 

 Nantes, 38 Bd. Michelet, 44-NANTES, France 



a Action des rayons X sur la physiologie et le developpement du coeur embryonnaire. 

 Gallus gallus (Aves) 



h Electrophysiologie du coeur embryonnaire. Gallus gallus (Aves) 



c Metabolisme des organes embryonnaires en culture in vitro. 



d Etude experimentale de la differenciation des cellules myocardiques. Gallus gallus (Aves) 



e Etude experimentale de la differenciation hypophysaire. Gallus gallus (Aves) 



LE DOUARIN (CHAUVAC), Mrs. N. M. Dr.es Sci., Prof. — Lab. d'Embryol., Fac. des 

 Sci. de Nantes, 38 Bd. Michelet 44-NANTES. France 



a Etude experimentale du developpement du tube digestif. Gallus gallus (Aves) 



b Etude experimentale du developpement du foie. Gallus gallus (Aves) 



c Etude de la differenciation biochimique des hepatocytes. Gallus gallus (Aves) 



d Etude experimentale de la differenciation hypophysaire. Gallus gallus (Aves) 



LEDOUX, L. D.Sc. — Lab. de Biochim. cellul.. Dept. de Radiobiol., Centre d'Etude dc 

 I'Energie Nucleaire, MOL, Belgium 



a Uptake, fate, and biological effect of exogeneous DNA in living systems, with special 

 attention to embryonic and cancer tissues. Hordeum spec. Arabidopsis spec, Lycopersicum 

 spec, Vicia spec. (Plantae), Gallus spec. (Aves), Mus spec. (Rodentia) 



LEE, H. H. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University 

 Parkway, BALTIMORE, Md. 21210. U.S.A. 



a Animal viruses as tools in studying embryonic development. Gallus gallus (Aves) (in col- 

 laboration with J. D. EBERT) 



LEES, A. D. ScD. — A.R.C. Unit of Insect Physiol.. Dept. of Zool.. Univ. of Cambridge. 

 Downing St., CAMBRIDGE, England 



a Control of polymorphic development, with special reference to environmental factors. 

 Megoura viciae (Aphididae, Homopfera) 



LEESON. C. R. M.D., Prof. — Dept. of Anat.. Coll. of Med., Univ. of Missouri. COLUM- 

 BIA. Mo. 65201, U.S.A. 



