MASCARENHAS, J. P. Ph.D., Prof. — Dept. of Biol. Sci., State Univ. of New York at 



Albany, ALBANY, N.Y. 12203, U.S.A. 

 a Protein and RNA synthesis in the control of pollen tube development. Tradescantia 



paludosa (Commelinaceae) 

 MASLOW, D. E. Ph.D. — Dept. of Exper. Pathol., Roswell Park Mem. Inst., BUFFALO, 



N.Y. 14203, U.S.A. 

 a Formation of cytochimeric striated muscle from disaggregated embryonic cells of different 



classes and tissues. Gallus domesticus (Aves), Mus spec. (RodentiaJ 

 h The effect of changes in the cell periphery caused by enzymatic treatments as determined 



by electrophoretic mobility on the formation of aggregates of disaggregated embryonic cells 



of different tissue origins. Gallus domesticus (Aves) 

 MASNER, P. RNDr., CSc. — Dept. of Developm. Morphol., Inst, of Entomol., Czech. 



Acad, of Sci., 7 Vinicna, PRAHA 2, Czechoslovakia 



— till Sept. 1970: Zoecon Corp. for Appl. Insect Hormone Research, Biol. Branch, 975 



California Ave., PALO ALTO, Calif. 94304. U.S.A. 

 a Endocrine regulation of gonad morphogenesis during postembryonic and imaginal devel- 

 opment, using synthetic analogues of these hormones, spec, of the juvenile hormone (cyto- 



logical, histological and histochemical techniques). Pyrrhocoris apterus (Heteroptera) 

 MASON, J. Ph.D. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S.. 49 bis Ave. de la 



Belle Gabrielle, 94-NOGENT-sur-MARNE, France 

 a Nutritional aspects of organotypic cancer culture 

 b Embryonic antigens in tumors 

 MASSART, C. M.D., Prof. — 1st. di Anat. e Istoembriol.. Univ. di Pisa, Via Roma 55, 



56100 PISA, Italy 

 MASTERS, C. J. Ph.D., Prof. — Graduate Dept. of Biochem., Brandeis Univ., WALTHAM, 



Mass. 02154, U.S.A. 

 MASTROLIA, Miss L. Dr.Biol.Sci. — 1st. di Zool. dell'Univ., Viale Regina Elena 324 (al 



Policlinico), ROMA, Italy 

 a Growth and differentiation of embryonic adrenal gland in vivo and in vitro. 



Gallus domesticus (Aves) 

 b Growth and differentiation of blood islands in vivo and in vitro. Gallus domes- 

 ticus (Aves) (in collaboration with H. MANELLI) 

 MASUDA, H. D.Sc. — Dept. of Biol., Fac. of Sci., Konan Univ., Okamoto, Motoyama-cho, 



Higashi-nada-ku, KOBE, Japan 

 a Structural changes of embryonic cells during cultivation. Cynops spp. (Urodela), Hynobius 



spp., Rana spp. (Anura) 

 MASUI, Y. Ph.D., Prof. — Dept. of Zool., Univ. of Toronto, 25 Harbord St., TORONTO 



5, Ont., Canada • 



a Nucleocytoplasmic interaction in oogenesis and early development. (Amphibia) 

 b Analysis of proteins of embryonic cells. (Amphibia) 

 c Studies of the induction problem in early development. (Amphibia) 

 MATEJKA. M. Dr.Med., CSc. — Inst, of Histol. and Embryol., Fac. of Med., Charles Univ., 



Karlovarska 48, PLZEN, Czechoslovakia 

 a The morphogenesis of the genital organs from the standpoint of evolutionary morphology. 



(Amniota. incl. Homo sapiens) 

 b The morphogenesis of the genital organs studied on the basis of experimental embryology. 



(Amniota) 

 MATHEWS, M. B. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHI- 

 CAGO. 111. 60637, U.S.A. 

 a Biophysical and biochemical aspects of connective tissue components 

 MATHUR, R. S. Ph.D. — Dept. of Zool., Univ. of Rajasthan, JAIPUR, India 

 MATSUMOTO, J. D.Sc. — Dept. of Biol., Keio Univ., YOKOHAMA-Hiyoshi, Japan 

 a Correlation between pigment formation and pteridine pigments during postembryonal 



stages. Carassius auratus (Teleostei) 

 b Biochemical and morphological properties of the pigment granules of chromatophores in 



relation to function and differentiation. Xiphophorus helleri, Carassius auratus (Teleostei) 

 MATSUNAGA, Miss Y. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 



chome, Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan 

 a Carbohydrate metabolism of the embryo. Anthocidaris spec, Pseudocentrotus spec, Hemi- 



centrotus spec. (Echinoidea) 

 MATTINGLY, Miss E. Ph.D. — Dept. of Zool., Univ. of Georgia, ATHENS. Ga. 30601, 



U.S.A. 

 a Variations in nucleic acid synthesis during larval development (autoradiography and 



biochemical methods). Rhynchosciara angelae (Diptera) 

 MATTON (VAN LEUVEN), Mrs. M. D. — Dept. of Ophthalmol., Fac. of Med., Univ. 



Hosp., State Univ. of Gent, De Pintelaan. GENT, Belgium 

 MATUSZEWSKI, B. Ph.D. — Dept. of Cytol., Fac. of Biol., Warsaw Univ., Krakowskie 



Przedmiescie 26/28, WARSZAWA 64, Poland 

 a Oogenesis. (Cecidomyiidae, Diptera) 

 h Cytochemical investigation on the origin of the mitotic spindle. (Cecidomyiidae, Diptera) 



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