. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ION TRANSPORT IN GRACILARIA 501 Another requirement for calculating equilibrium potentials is that intracellular ions he in solution rather than adsorbed or bound to cytoplasmic sites. In Gracilaria intracellular ion binding was expected to he small, since the cytoplasm comprises only a small fraction of the large vacuolated cells. With K42, Rb86 and Cs13r this was substantiated by the observation that maximally labeled tissues, when killed and held in the same radioactive environment, lost virtually all of their radioactivi
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ION TRANSPORT IN GRACILARIA 501 Another requirement for calculating equilibrium potentials is that intracellular ions he in solution rather than adsorbed or bound to cytoplasmic sites. In Gracilaria intracellular ion binding was expected to he small, since the cytoplasm comprises only a small fraction of the large vacuolated cells. With K42, Rb86 and Cs13r this was substantiated by the observation that maximally labeled tissues, when killed and held in the same radioactive environment, lost virtually all of their radioactivity Light Adapted Glutamate. Q 12 HOURS 16 20 FIGURE 1. Potassium-42 uptake by cells of Gracilaria. Effects of light (8500 lux ) (O), darkness (•), anaerobiosis (nitrogen) (•), glutamate (50 mM), and previous exposure to light (20 hours at 8500 lux). Arrow indicates the addition of air to tissues previously exposed to light, then placed in a K42 environment under nitrogen. Each point represents a measurement of 30-40 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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