c RNA-synthesis in anucleate cells. (Algae) 



d Cooperation between different subcellular components in morphogenesis. (Algae) 



SCHWEISTHAL, M. R. Ph.D.. Prof. — Dcpt. of Oral Biol., School of Dent., Univ. of 

 Kentucky. LEXINGTON, Ky. 40506, U.S.A. 



SCOTHORNE, R. J. M.D., Prof. — Dept. of Anat., Med. School, The Univ., NEW- 

 CASTLE upon Tyne 1. England 



SCOTT, T. K. Ph.D., Prof. — Dept. of Botany, Univ. of North Carolina, CHAPEL HILL, 

 N.C. 275H, U.S.A. 



a Auxin movement; the relation between transport and growth in seedlings as influenced 

 by age and light. Pisiim sativum (Leguminosae), Zea mays (Gramineae) 



h Apical dominance; characterization of the hormonal control exhibited by shoot apices in 

 lateral bud suppression. Pisum sativum (Leguminosae), Coleus blumei (Labiatae) 



SCRIBA, M. E. L. Ph.D. — Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/Lahn, 

 W.Germany 



a Developmental abnormalities caused by lethal factors. Drosophila melanogaster (Diptera) 



SEAGO, J. L. Ph.D. — Dept. of Biol., State Univ. Coll., OSWEGO, N.Y. 13126, U.S.A. 



a (Irowth phenomena of the germinating .seedling. Ipontocn purpurea (Convolvulacea) 



h The initiation and establishment of the vascular connection between main and lateral roots. 

 Ipomoea purpurea (Convolvulaceae) 



c Developmental changes in the apical meristem. Ipomoea purpurea (Convolvulaceae) 



SEALE, R. U. Ph.D. — Dept. of Anat., Univ. of Colorado Med. School, 4200 E. 9th 

 Ave., DENVER, Colo. 80220, U.S.A. 



SEARLS, R L. Ph.D., Prof. — Dept. of Biol., Temple Univ., Broad and Berks St.. 

 PHILADELPHIA, Pa. 19122, U.S.A. 



a Ectoderm-mesoderm interaction in limb development. Gallus domesticus (Aves) 



b Metabolic changes in development. Gallus domesticus (Aves) 



c Biochemistry of development. Gallus domesticus (Aves) 



SEDLACEK, J. M.D., Ph.D. — Lab. of Embryophysiol., Inst, of Physiol., Fac. of Gen. Med., 

 Charles Univ., Albertov 5, PRAGUE 2, Czechoslovakia 



a Development of spontaneous and evoked phasic activity of CNS in prenatal period. 

 (Aves; Mammalia) 



b Development of low and high frequency impedance in fetal brain tissue. (Aves; Mammalia) 



c Development of steady and membrane potential in fetal brain. (Aves; Mammalia) 



d Development of extracellular environment of fetal brain (physical and chemical). (Aves; 

 Mammalia) 



e Development of membrane ATP-ase system in fetal brain tissue. (Aves) 



SEDRA, S. N. Ph.D., Prof. — Dept. of Zool., Fac. of Sci., Alexandria Univ., Moharram 

 Bey, ALEXANDRIA, Egypt, U.A.R. • 



a Behaviour of egg laying. Rana fusca. Bufo regularis (Anura) 



h The chronological order of ossification. Bufo regularis (Anura) 



c The development of the urogenital system. Bufo regularis (Anura) (in collaboration with 

 M. I. MICHAEL and S. H. KHALIL) 



SEECOF, R. L. Ph.D. — Dept. of Biol., City of Hope Med. Center, 1500 E. Duarte Rd., 

 DUARTE, Calif. 91010, U.S.A. 



a In vitro differentiation of embryonic cells; which embryonic stages give cells com- 

 petent to do this?; identity of differentiating cells. Drosophila melanogaster (Diptera) 



gEFTALlOGLU, Miss A. — Inst, of Histol. and Embryol., Med. Fac, Hacettepe Sci. Center, 

 ANKARA, Turkey 



a Development and differentiation of mast cells after stimulation with 48/80 (histology and 

 histochemistry). Rattus norvegicus (Rodentia) 



b Ultrastructural development and differentiation of mast cells. Rattus norvegicus (Rodentia) 



SEGAL, E. Ph.D., Prof. — San Fernando Valley State Coll., 18111 Nordhoff St., NORTH- 

 RIDGE, Cahf. 91326, U.S.A. 



SEGAL, S. J. Ph.D. — Biomed. Div., The Population Council, Rockefeller Univ., NEW 

 YORK, N.Y. 10021. U.S.A. • 



d Immunologic analysis of pituitary gonadotrophin function: development and species specif- 

 icity. (Vertebrata) 



h Mechanism of hormone action. (Vertebrata) 



c Action of blastotoxic chemical agents. (Vertebrata) 



d Oogenesis in the constant-estrus female. Rattus norvegicus (Rodentia) 



e Studies on RNA in implantation. Rattus norvegicus (Rodentia), (Primates) 



SEHNAL, F. C.Sc. — Dept. of Physiol., Inst, of Entomol., Czechoslov. Acad, of Sci.. Na 



Folimance 5, PRAHA 2, Czechoslovakia 

 SEICHERT, V. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3, PRAHA 2, 

 Czechoslovakia 



a Experimental analysis of limb formation. Gallus domesticus (Aves) 



SEIDEL, F. Dr.phil., Prof. (Emer.) — Zool. Inst, der Univ., Ketzerbach 63, 355 MAR- 

 BURG/Lahn, W.Germany • 

 SEIGER, M. B. Ph.D., Prof. — Dept. of Biol., Div. of Sci. and Engin., Wright State Univ.. 

 Col. Glenn Highway, DAYTON, Ohio 45431. U.S.A. 



157 



