a Fetal and maternal calcium metabolism. Macaca mulatta, M. arctoides, M. irus, Homo sapiens 



(Primates) 

 b Toxicity of methylmercury for the fetus and neonate. Same species as a 

 c Fetal metabolism and composition in diabetic pregnancy. Same species as a 

 d Effect of aspartate and monosodium glutaniate on fetus and neonate. Same species as a 

 e Differentiation of pituitary thyrotrophs. Rattus norvegicus (Rodentia) 

 f Isolation and culture of pancreatic beta cells. Same species as a 

 RICE, J. M.; Ph.D. - Exp. Pathol. Branch, Nat. Cane. Inst., N.I.H., Bldg 37, Rm 3A09, BETHESDA, 



MD 20014, U.S.A. 

 a Susceptibility of different organ systems to transplacental chemical carcinogens during late 



embryonal/early fetal development: modifying roles of metabolism, immune responses, and 



nucleic acid repair. Mus musculus, Rattus norvegicus (Rodentia), Erythrocebus patas (Primates) 

 RICHARDS, Mrs. CM.; Ph.D. - Div. of Biol. Sci., Univ. of Michigan, ANN ARBOR, MI 48109, 



U.S.A. 

 a The production of inbred strains using gynogenetic techniques of two types: 1. combination of 



egg nucleus plus second polar body; 2. inhibition of the first cleavage of a haploid egg to produce 



completely homozygous diploids. Rana pipiens (Anura) 

 b Genetics of various mutants including albino, blue, melanoid, as well as mutants uncovered by 



gynogenesis. Same species as a 

 c Control of the sex of metamorphosed animals by the administration of estrogen or testosterone 



at appropriate larval stages. Same species as a ■ 



d Embryonic development, genetics, and regeneration. Hyperolius spec. (Anura) 1 



RIFKIND, R. A.; M.D. - Dept. of Human Genet, and Developm., Coll. of Phys. and Surg., Columbia 



Univ., 630 West 168th St., New York, 10032, NY, U.S.A. 

 a Differentiation in virus-transformed hemopoietic cells; regulation of hemoglobin synthesis. Mus 



musculus (Rodentia) 

 b Cell surface properties of differentiating hemopoietic cells; normal and virus-transformed. Same 



species as a 

 RIKMENSPOEL, R.; Ph.D., Prof. - Dept. of Biol. Sci., State Univ. of New York, 1400 Washington 



Ave., ALBANY, NY 12222, U.S.A. ■ 



a Control mechanisms of sperm motility. Bos taurus (Artiodactyla), Arbacia spec. (Echinoidea) f 

 b Contractile mechanisms in cilia. OpaUna spec. (Zoomastigina), Paramecium spec. (Cihata), Sabel- 



laria spec, Phragmatopoma spec. (Polychaeta), Mytilus spec. (LameUibranchia) 

 RITCHIE, Mrs. A.; Ph.D. - Dept. of Embryol., Carnegie Inst, of Wash., 115 W. University Parkway, 



BALTIMORE, MD 21210, U.S.A. 

 RIVERA, Miss E. M.; Ph.D., Prof. - Dept. of Zool., Michigan State Univ., EAST LANSING, 



MI 48824, U.S.A. 

 a Mammary gland development in organ culture; carcinogen-induced mammary hyperplasias and 



neoplasias. Rattus spec. (Rodentia) 

 RIZKI, T. M.; Ph.D., Prof. - Div. of Biol. Sci., Univ. of Michigan, ANN ARBOR, MI 48109, U.S.A. 

 a Mutant genes regulating the function and structure of fat cells in the functional differentiation of 



the fat body (fluorescence and electron microscopy). Drosophila melanogaster (Diptera) 

 b The effects of various nucleic acid analogs in relation to morphogenesis, esp. those substances 



which can serve as mutagens. Same species as a 

 ROBERTS, J. F.; Ph.D., Prof. - Dept. of Zool., North Carolina State Univ., Box 5577, RALEIGH, 



NC 27607, U.S.A. 

 a Marked changes in mitochondrial structure and function result from changes in mitochondrial 



gene expression; a cell-free system from E. coU is used to compare mitochondrial DNA-directed 



RNA and protein synthesis using mtDNAs isolated from the different life forms. Trypanosoma 



brucei (Zoomastigina) 

 ROBERTS, L. W.; Ph.D., Prof. - Dept. of Biol. Sci., Univ. of Idalio, MOSCOW, ID 83843, U.S.A. 

 a Pre-pattern phenomenon of localization of enzymatic activity prior to the formation of wound j 



vessel member. Coleus blumei (Labiatae) (with S. BABA, Japan) ; 



b Effect of environment on morphogenesis of vascular elements. Same species as a (with S. BABA, ! 



Japan) 

 c Developmental physiology of xylogenesis in pith parenchyma explants: differentiation patterns 



and hormonal requirements. Lactuca sativa (Compositae) 

 ROBERTSON, A. D. J.; B.A. - Dept. of Biophys. and Theoret. Biol., Univ. of Chicago 1101 E. 



57th St., CHICAGO, IE 60637, U.S.A. 

 ROBERTSON, G.G.; Ph.D., Prof. - Dept. of Anat., Ctr. for Heahh Sci., Univ. of Tennessee, 800 



Madison Ave., MEMPHIS, TN 38163, U.S.A. 

 ROBERTSON, H. A.; Ph.D. - Dept. of Reprod. Physiol., Anim. Res. Inst., OTTAWA, Ont. KIA 0C6, 



Canada 

 a Comparative aspects of early embryo-uterine interaction leading to implantation. Ovis arics. Bos 



taurus, Sus scrofa (Artiodactyla) 

 b Endocrinology of the developing embryo. Gallus gallus (Avcs) 



ROBINSON, Miss H. L.; Ph.D. - Dept. of Biol. Sci., Dartmouth Coll., HANOVER, Nil 03755, U.S.A. 

 a Biochemistry of metamorphosis, tail regression and lysosomal enzymes. Xenopus laevis (Anura) 

 b Mechanisms of thyroid hormone action. (Anura) 

 ROBINSON, J.C; M.D., Ph.D. - Lab. of Biomed. Sci., Natl. Inst, of Child Health and Human 



Developm., Natl. Inst, of Health, Bldg. 6, Rm 408, BETHliSDA, MD 20014, U.S.A. 

 a Pregnancy-associated enzymes in maternal blood plasma. Homo sapiens (Primates) 

 b Placental enzymes. Same species as a 



74 



