b. Action d'un corticoide (phosphate de dexametharone) in vivo et in 



vitro. (Aves; Mammalia) 

 RUDDLE, F.H. B.A., M.S., Ph.D. — Dept. of Biol. (Osborn Memorial 



Lab.), Yale Univ.. NEW HAVEN, Conn. 06520, U.S.A. 

 a. Discrimination between genetic and epigenetic events in somatic cells 



in vitro by studying enzyme variants. 

 RUDEBERG, S. L Ph.D. — Tornblad-Inst. for comp. Embryol., Biskops- 



gatan 7, LUND, Sweden 

 RUDNICK, Miss D. Ph.D., M.LLE. — Dept. of Biol. (Osborn Memorial 



Lab.), Yale Univ., NEW HAVEN, Conn.06520, U.S.A. 

 a. Glutamine metabolism in development. Gallus spec. (Aves) 

 RuEGG, M. Cand.phil. — Zool.-vergl.Anat. Inst., Naturwiss. Fak., Univ. 



Ziirich, Kiinstlergasse 16, ZURICH, Schweiz 

 RUGH, R. M.A., Ph.D., M.I.I.E., Prof. — Radiol. Res.Lab., Dept. of Ra- 

 diol, Coll. of Physicians & Surgeons, Columbia Univ., 630 West 168th 



St., NEW YORK, N.Y. 10032, U.S.A. 



a. Heterosis and X-irradiation tolerance. Mus musculus (Rodentia) 



b. Sensitivity to irradiation of the fetal testes at different stages of develop- 

 ment. Mus musculus (Rodentia) 



c. Reparation of the fetal eye following irradiation insult. Mus musculus 

 (Rodentia) 



d. Behavior following low-leval fetal X-irradiation, Rattus norvegicus 

 (Rodentia) 



e. Neuropathological effects of ionizing radiations on the fetus. (Mamma- 

 lia) 



f. Behavioral effects of the fetus X-rayed in utero. (Mammalia) 



g. Heterosis and the development of irradiation congenital anomalies. 

 (Mammalia) 



h. Electroencephalographic analysis of brain following fetal irradiation. 



(Mammalia) 

 RULON, G. O. Ph.D., Prof. — Dept. of Biol., Northwestern Univ., EVAN- 



STON, 111., U.S.A. 

 RUMPLER, Y. Dr.en Med. — Inst. d'Embryol., Fac. de Med., 1 Place de 



I'Hopital, STRASBOURG. France 

 RUNNER, M.N. Ph.D., M.I. I.E. — Dept. of Biol., Univ. of Colorado, 



BOULDER, Colo. 80304, U.S.A. 



a. Interaction of combined environmental influences upon morphogenesis 

 (all possible combinations of pairs of 6 teratogens are tested for synerg- 

 ism and interference effects when given to the pregnant mother at 9 days 

 post coitum). Mus musculus (Rodentia) 



b. Effects of chemical teratogenesis upon protein synthesis (embryos in 

 vivo and in vitro; effect of treatment upon uptake of amino acids; 

 electrophoretic separations of proteins and enzymes). Mus musculus 

 (Rodentia) , Gallus domesticus (Aves) 



c. The role of maternal metabolism in promoting and preventing abnormal 

 metabolism (highly controlled, germ free, animals are studied by correl- 

 ating liver and placental enzymes to teratogenesis; experiments during 

 early somite stages). Mus musculus (Rodentia) 



RUNNSTRoM, J.A.M. Ph.D., M.D., M.I.I.E., Prof.(Emer.) — Wenner 

 Gren's Inst, for exper. Biol, Norrtullsgatan 16, STOCKHOLM Va., 

 Sweden 



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