Acta Biologica 18. (1967)

1. szám

INDEX Zs. Nagy, I. : Histochemical demonstration of biogenic monoamines in the central nervous system of the lamellibranch mollusc Anodonta cygnea L................................................. 1 Koritsánszky, S.— Vigh, B. — Aros, B.: Studies on the Gomori-positive glial cells. I. The changes in the periventricular Gomori-positive glial cells in rats of various ages .............................................................................................................................................................. 9 Petrusz, P. — Nagy, É.: On the mechanism of sexual differentiation of the hypothalamus: decreased hypothalamic oestrogen sensitivity in androgen-sterilized female rats 21 Flerkó, В. — Petrusz, P. — Tima, L. : On the mechanism of sexual differentiation of the hypo­thalamus. Factors influencing the “critical period” of the rat....................................... 27 Efremova, S. M.: The cell behaviour of the fresh-water sponge Ephydalia fluviatilis. A time-lapse microcinematography study ............................................................................. 37 Hadházi, Cs. — II. Oláh, É. : Studies on cartilage formation. X. Phosphoglucose isomerase activity of the chondrifying articular surface in various stages of regeneration. ... 47 Vigh, B. — Röhlich, P. Teichmann, I. Áros, В.: Ependymosecretion (Ependymal neuro­secretion). VI. Light- and electron microscopic examination of the subcommissural organ of the guinea pig ................................................................................................................... 53 Sharma, A. K. — Bhattacharyya, G. N.: A study on the response of chromosomes to anti­biotic treatment....................................................................................................................................... 67 Virágh, Sz. —Tiboldi, T. Kovács, K. Julesz, M. — Törő, L: Electron microscopic structure of anterior pituitaries transplanted into the anterior chamber of the eye in rats 77 Recensiones............................................................................................................................................................... 91 B. Baranyi, I. — Salánki, J. : Changes in the secretory activity of the central nervous system of Anodonta cygnea upon the action of chemical agents.................................. 93 Csaba, G. Bierbauer, J. —Réti, /.: Contribution to the mechanism of the destabilizing effect of heparin on the cell division......................................................................................... 105 Péczely, P. — Muray, T. : The effect of KC1, NaCl, hydration and dehydration on the subcommissural organ of the domestic pigeon........................................................................ 115 Mess, B.: The thyroid-regulating habenular mechanism and the thyrotrophic area of the anterior hypothalamus ..................................................................................................................... 129 Törő, I. —Oláh, I.: Studies on the blood-thymus barrier............................................................... 135 Hortobágyi, T. — Vigassy, J.: Microorganisms in the water circuits exposed to radiation of the nuclear reactor, Budapest-Csilleberc .................................................................................. 151 Virágh, Sz. — Korányi Both, A.: The fine structure of abdominal paraganglia in the newborn mouse ...................................................................................................................................... 161 Naguib, M. I.: Assimilation of nitrates and phosphates by ascorbic acid-fed mycelia of Cunninghamella elegáns .............................................................................................................. 181 Актауev, I. G. — Réthelyi, M. — Majorossy, K.: Changes induced by adrenalectomy in nerve endings of the hypothalamic median eminence (zona palisadica) in the albino rat .................................................................................................................................................. 187 Hollósi, G. — Sarang, I.: Nucleic acid content of the nictitating membrane after cervical sympathectomy ...................................................................................................................................... 201 Wenger, T. — Törk, I.— Vigh, B. — Áros, B.: Studies on the organon vasculosum laminae terminális. I. Comparative examination in teleost fishes. (A morphological study) 207

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