Acta Biologica 20. (1969)

1. szám

ADIUVANTIBUS G. CSABA B FLERKÓ В. С » Y б R F F Y S. KROMPECIIER J SALÁNKI REDIGIT I. TÖRŐ TOMUS XX FASCICULUS I -•щт AKADÉMIAI KIADÓ, BUDAPEST 1969 Rajbanshi, V. К. — Tewari, H. В.: Histochemical studies on the distribution of alkaline and acid phosphatases in the barbels of a fresh-water teleost, Saccobranchus fossilis 1 Sharma, A. K. —Gosh, S.: A comparative study of the effects of certain chemical agents on chromosomes ................. 11 Hortobágyi, T.: Report of an algal bloom in Viet-Nam ... 23 Korotkova, G. P.—Tokin, B. P.: Stimulation of the processes of somatic embryogenesis in some Porifera and Coelen­­terata. II. Provocation of somatic embryogenesis in Laomcdea flexuosa HlNKS by colchicine and mechanical injuries .................................... 35 Guraya, S. S.: Histochemical study of follicular atresia in the amphibian ovary.............................................................................. 43 Csaba, G.—Surján, L. jr.—Fischer, J. —Kiss, J.—Törő, I. JR.: On the mechanism of mast cell formation. Effect of glucocorticoids on the mast cells of normal and thymectomizcd rats............................................................. 57 Zwierz, K. — Bialobrzeska, J.—Popowicz, J.: L-glutamine: D-fructose-6-phosphate aminotransferase (EC 2.6.1.16) activity in mammalian tissues ............................................... 75 Vitális, S. —Szabó, G.: Cytomorphological effect of factor C in submerged cultures on the hyphae of Streptomyces griseus strain No. 52 — 1............................................................. 85 Tar, E. —Oláh, I.—Törő, I.: Cell migration in the developing follicle of the bursa of Fabricius between cortex and me­dulla............................................................................ 93 H. Oláh, É.: Hexosamine production in vitro by rat tissues under aerobic and anaerobic conditions .......... 101 Áros, B. —Konok, I.: Light microscopic examination of the nervous system of Tunicata...................................................... 109 Recensiones ...................................................................................................... 125

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