The Control of Tadpole Growth by Alga-Like Cells
作者： Christina M. Richards
DOI: 10.1086/PHYSZOOL.35.4.30155425
关键词: Tadpole 、 Ultraviolet light 、 Feces 、 Biology 、 Inhibitory effect 、 Filtration 、 Bacteria 、 Biophysics 、 Centrifugation 、 Sonication
摘要: T ADPOLES crowded together or raised in water previously occupied by other tadpoles do not grow well. Centrifugation and filtration studies (Richards, 1958) indicated that particles larger than bacteria the intestinal lumen feces of are associated with inhibition. Heating to 600 C., freezing thawing, ultraviolet light, sonication, low pH removed inhibitory effect particles. Colorless round cells 5-19 t diameter (Fig. 1) contents tad-
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