ROUX, Ch. Dr. en Med. — Lab. d'Embryol.. Fac. de Med., 45 Rue des Sts. 

 Peres, PARIS Vie, France 



a. Influence teratogene des intoxications. Mus rattus (Rodentia) 



b. Anomalies de l'appareil urogenital. Mus rattus (Rodentia) 

 ROWINSKI, P. Prof. — 1st. di Fisiol. gen. e spec, degli Animali domestici 



e Chim. biol., Univ. di Perugia, PERUGIA, Italia 

 a. Histochemical and chemical determination of acetylcholinesterase and 

 cholinesterase in muscular tissue (skeletal muscle, heart, gizzard) and its 

 significance in relation to the changing parameters of excitability during 

 differentiation. Gallus domesticus (Aves) 

 RUBEN, L. N. A.B., M.S., Ph.D. — Dept. of Biol., Reed Coll., PORT- 

 LAND 2, Ore., U.S.A. 



a. The interrelationships of cancer and regenerating systems. Rana pipiens, 

 Ambystoma opacum, Ttiturus viridescens, Taricha granulosa (Amphibia) 



b. The induction of supernumerary limbs. Rana pipiens, Ambystoma opa- 

 cum, Triturus viridescens, Taricha granulosa (Amphibia) 



RUCH, J. V. — Inst. d'Embryol., Fac. de Med., 1 Place de l'Hopital, 

 STRASBOURG, France 



a. Recherches sur la symetrie bilaterale. (Pisces) 



b. Recherches sur le maintien des canaux de Miiller. 



RODEBERG, S. I. Fil.lic. — Tornblad-Inst. for comp. Embryol., Biskops- 

 gatan 7, LUND, Sweden 

 a. Embryogenesis of cerebellar nuclei. (Vertebrata) 

 RUDNICK, Miss D. Ph.D., M.I.I.E. — Dept. of Zool. (Osborn Zool. Lab.), 

 Yale Univ., NEW HAVEN 11, Conn., U.S.A. 

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

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

 Radiol., Coll. of Physicians & Surgeons, Columbia Univ., 630 West 

 168th St., NEW YORK 32, N.Y., U.S.A. 



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



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

 lopment. Mus musculus (Rodentia) 



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



(Rodentia) 



d. Behavior following low-level fetal X-irradiation. Rattus norvegicus 

 (Rodentia) 



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

 STON, 111., U.S.A. 



a. The control of growth and differentiation through the use of enzyme 

 inhibitors and activators. (Echinoidea) 



b. The control of head forms and reconstitutional processes with enzyme 

 inhibitors. (Planariidae, Turbellaria) 



c. The preservation of fertility of eggs with various chemical compounds. 

 ( ' Echinodermata) 



RUNNER, M. N. Ph.D., M.I.I.E. — Program for Developm. Biol., National 

 Sci. Found., WASHINGTON 25, D.C., U.S.A. 



a. Hormonal induction of ovulation, conception and pregnancy in prepuberal 

 animals. Mus musculus (Rodentia) 



b. Parental and dietary influences on skeletal morphogenesis. Mus musculus 

 (Rodentia) 



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