Fischer 31 Frances 



FISCHER, Miss I. Dr — Dept of Zool., Univ. of Chicago, CHICAGO 37, 

 III., U.S.A. 



a. Fate of tissue culture cells introduced into embryos after prolonged cul- 

 tivation in vitro. Gallus domesticus (Aves) (in collaboration with 

 P. A. WEISS) 



b. Differential effects of organ extracts on the organ development i n 

 vitro (in collaboration with P. A. WEISS) 



FISK, A. M.Sc. — St Mary's Hosp., Med. School, Norfolk Place, Pad- 

 dington, LONDON W. 2. England (U.K.) 



a. The development of the ear and associated structures. Petromyzon 

 (Cyclostomata, Pisces) 



b. The development of parachordals and trabeculae. Petromyzon (Cyclo- 

 stomata, Pisces) (in collaboration with Miss M. TRIBE) 



FITZGERALD, L. R. Ph.D. — Fac. of Biol. Sci., Med. Div., Univ. of 



Tennessee, MEMPHIS 3, Tenn., U.S.A. 



(no data received over this year) 

 FLEXNER, L. B. B.S., M.D. — Dept of Embryol.. Carnegie Inst, of 



Washington, Wolfe and Madison Strs, BALTIMORE 5, Md, U.S.A. 



a. Enzyme activities in fetal liver and cerebral cortex. Cavia cobaya (Ro- 

 de ntia) 



b. Placental transfer using radioisotopes. Cavia cobaya (Rodentia) 

 FLICKINGER, R. A. Ph.D. — Zool. Lab., Univ. of Pennsylvania, PHILA- 

 DELPHIA 4, Pa., U.S.A.; presently: Lab. de Morphol. anim., Univ. 

 hbre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES-Auder- 

 ghem, Belgique. 



a. An electrophoretic and serological study of proteins during early deve- 

 lopment: 1. The effects of specific antisera upon development, 2. The 

 time sequence of appearance of the various embryo proteins. Rana fusca 

 (Anura) (in collaboration with G. NACE) 



b. An analysis of the in vitro migration and differentiation of neural 

 crest cells: 1. The effects of specific antisera (this phase of work in 

 collaboration with G. NACE). 2. The effects of metabolic products. 

 Amblystoma mexicanum (Urodela) 



FONSECA SACARRaO, G. da Dr Sc. — Museu e Lab. Zool. d. Fac. d. 

 Ci.. Univ. d. Lisboa, LISBOA, Portugal. 



a. Early development (germ-layers, gastrulation, blastokinesis, shell-gland). 

 (Octopoda and other Cephalopoda) 



b. Comparative study of development, mainly the ontogenetic evolution of 

 adaptability of the embryo to its yolk-organ. (Decapoda and Octopoda, 

 Cephalopoda) 



FOX, H. B.Sc. — Dept of Zool. and Comp. Anat., Univ. Coll. London, 

 Gower St, LONDON W.C. 1, England. 



a. Normal development of the head. Cryptobranchus japonicus (Urodela) 



b. Normal development of ossifications of the head. Amblystoma (Urodela) 

 FOX, J. J. A.B., Ph.D. — University of Colorado. BOULDER. Colorado, 



U.S.A. 

 a. Competitive inhibition of isolated embryos by synthetic nucleosides grown 

 in a synthetic medium. Gallus domesticus (Aves) 

 FRANCESCHINI, M. M.D. — Inst, of human Anat., Fac. of Med., Corso 

 Massimo d'Azegho 52, TORINO, Italy, 

 (no embryological work in progress) 



