a Biochemical alterations durine chondrogenesis in fetuses obtained from mothers administered 

 9-methylpteroyl glutamic acid (tohc acid antagonist): hydroxyprohne studies, AMPS studies, 

 electron microscopy. (Mammalia) , , , ■ .r c. e 



b In vitro culture of chondroblasts and intact, viable, cartilage models obtained from fetuses ot 

 teratogen treated mothers: collagen synthesis and release into matrix; AMPS production and 

 release into matrix. Rat . , • ■ 



c Biochemical developments during normal and abnormal cardiogenesis: sarcoplasmic and contrac- 

 tile protein fractions; collagen and AMPS (in vitro and in ovo radioisotopic studies). (Aves) 



d Histochemistry of temporal appearance and spatial distribution of glycosaminoglycans (GAC) in 

 the limb during mesenchymal condensation, establishment of cartilage models and onset ot 

 ossification in normal embryos and in embryos from folic acid-deficient mothers. Rat 



SCHMIDT, T.; Ph.D. - Dept. of Biol. Sci., Hopkins Mar. Stat., Stanford Univ., PACIFIC GROVE, 

 CA 93950, USA ^ ^ 



a Nature of signal contributed by sperm to activate egg (biochemistry). Strongylocentrotus 

 purpuratus (Ixhinoidea) . . . • -v 



b Isolation of morphogenetic substances from the polar lobe (biochemistry, microiontophoresis). 

 Ilyanassa obsoleta (Gastropoda) ,^ ^,rrw n-r 



SCHOENWOLF, G. C; Ph.D. - Dept. of Anat., Coll. of Med., Univ. of Utah, SALT LAKE CITY, UT 

 84132. USA ^ ., , , ^,. , 



a Formation of neural tube, part, fusion of neural folds and cavitation of tail bud. Chicken, Mouse 



b Changes in cellular morphology, arrangement and contact during gastrulation, as related to 

 specific morphogenetic movements. Xenopus laevis (Anura), Chicken 



c Formation and bending of the neural plate. Chicken 



d Formation of the medullary cord. Chicken . „,,,,.,.„, 



SCHROEDER,P.C.; Ph.D. - Dept.of Zool.,Coll.of Sci. and Arts, Washington State Univ., PULLMAN, 

 WA 99164. USA 



a Oocytc-follicle cell relationships, their relation to the endocrine control ot spawning and to 

 vertebrate ovulation. Patiria miniata (Asteroidea) 



b Cellular function in the follicles during ovulation. Oryzias latipes (Teleostei), Xenopus laevis 

 (Anura); Tliamnophis elegans (Ophidia), Anolis carolinensis (Lacertilia) 



c Gametogenesis. Typosyllis spp. (Syllidae,Polychaeta) 



SCHROIT A J.- Ph.D. - Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University 

 Parku ay, BALTIMORE, MD 21210, USA 



SCHUBIGER, G.; Ph.D. - Dept. of Zool., Univ. of Washington, SEATTLE, WA 98195, USA 



SCHUETZ A W • Ph D., Prof. - Dept. of Popul. Dynamics, Sch. of Hyg. and Publ. Health, Johns 

 Hopkins Univ., 615 N. Wolfe St., BALTIMORE, MD 21205, USA 



a Ion transport and cell membrane function in oocyte atomic absorption spectrophotometry. 

 (Amphibia; Mammalia) 



b Testis differentiation and spermatogenesis. (Mammalia) 



c Oocyte growth and maturation, nuclear-cytoplasmic interactions, cytoplasmic factors. (Aster- 

 oidea; Amphibia; Mammalia) 



d Membrane structure and function, fertilisation, activation and pronuclear formation. (Asteroidea; 

 Amphibia) 



e Purine synthesis and secretion. (Asteroidea) ., > i ^^ 



f Control of meiosis during spermatogenesis (cell culture, hormone ettects). Rat and other Mam- 

 malia ,, , . ff t \ 



g Regulation of oocyte yolk protein (vitellogenin) incorporation (cell culture, hormone eiiectsj. 



Rana pipiens (Anura) 

 h Ionic mechanisms in activation and fertilisation (Asteroidea; Amphibia) ^», r^ .nv 



SCHUETZ, G. A.; Ph.D. - Div. of Med. Biochem., Health Sci. Ctr., Univ. ot Calgary, CALGARY, 



Alta,T2N 1N4, Canada , _. , 



a Control of gene expression in early development (emphasis on transcription and translation). 



R 1 h b i t 

 SCHWALM, F. E.; Dr.phU.nat. - Dept. of Biol. Sci., Illinois State Univ., NORMAL, IL 61761, USA 

 a Synthesis, storage and utilization of morphogenetic agents in oogenesis and early embryogenesis 



(electron microscopy, autoradiography) Coelopa frigida (Diptera) 

 b Isolation and characterization of nucleic acids during oogenesis and embryogenesis. Same species 



as a . . ^ . 



c Fate and function of polar granules in male sonads and during spcrmiogenesis. Same species as a 

 SCOTT, Ms. J. N.; Ph.D. - Dept. of Anat., Wright State Univ., DAYTON, OH 45431 , USA 

 SCOTT, M. Y.; Ph.D. - Div. of Biol., CaUf. Inst, of Technol., PASADENA, CA 91125, USA 

 SCOTT, S. A.; Ph.D. - Dept. of Neurobiol. and Behavior, State Univ. of New York, STONY BROOK, 



NY 11794, USA 

 a Development of cutaneous sensory innervation patterns in the hindlimb (electrophysiology, LM, 



EM). Chicken 

 SCOTT, T.K.; Ph.D., Prof. - Dept. of Bot., Univ. of North Carolina, CHAPEL HILL, NC 27514, USA 

 a Relation between auxin transport and growth in seedlings as influenced by age and light. Pisum 



sativum (Papilionaceae), Zea mays (Gramineae) ■ ■ i 



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



bud suppression. Pisum sativum (Papilionaceae), Coleus blumei (Labiatae) 

 SEAGO, J. L.;Ph.D. - Dept. of Biol., State Univ. of New York, OSWEGO, NY 13126, USA 

 a Seed germination and early development of seedlings, incl. experimental morphology of rooting 



and effects of rooting on shoot growth. Glycine max (Papilionaceae) 



77 



