Acta Biologica 14. (1963)

1. szám

Polteva, D. G.: Regeneration and somatic embryogenesis of Actinia equina in different stages of ontogenetic development................................................................................... 199 Müller, M.—Törő, I. —Polgár, M. —Druga, A.: Studies on feeding and digestion in Protozoa. VI. The effect of feeding of nonnutritive particles on acid phosphatase in Paramecium multimicronucleatum................................................................................... 209 Szemere, G.: Heritability of the factors of natural immunity in rats................................ 215 Raikov, I. B.: The nuclear apparatus of Remanella multinucleata Kahl (Ciliata, Ilolotricha) 221 Hámori, J.: Electron-microscope studies on neuromuscular junctions of end-plate type in insects.................................................................................................................................... 231 Recensiones............................................................................................................................................ 247 PethŐ, M.: Amino acid metabolism and resistance to Ustilago maydis (De.) Cd. in maize' 249 Haranghy, L. — Kováts, Z.: Water-soluble melanin preparation.......................................... 265 Lovkova, M. Ja.: Metabolism of nicotine in tobacco.................................................................. 273 FrenyÓ, V.: The initial phase of C02 uptake of leaves.............................................................. 281 Kardos, J.: Comparative studies on Datura stramonium and its symbiotic microorganism 285 Teichmann, I. —Vigh, В. —Áros, В.: Histocbemical studies on Gomori-positive substances. I. Examination of the Gomori-positive substance in the endolymphatic sac of the rat ............................................................................................................................................... 293 Csaba, G.—Törő, I, —Bernád, I. — Fischer, J.: The immunological competence of the thymus and spleen in newborn and adult age.................................................................. 301 Haranghy, L. — Balázs, A. —Burg, M.: Phenomenon of ageing in Unionidae, as example of ageing in animals of telometric growth........................................................................ 311 Naguib, M. I.: Effect of colchicine on the carbohydrate metabolism during formation of mycelial felts of Cunninghamella sp................................................................................... 319 DÉzsi, L. — Farkas, G.: Effect of kinetin on enzymes of glycolic acid metabolism in cereal leaves .......................................................................................................................................... 325 Zólyomi, В.: New method for ecological comparison of vegetational units and habitats 333 Recensiones............................................................................................................................................ 339

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