. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TIME (min) FIGURE 3. Intracellular Na+ (A), K+ (B), and Cl~ (C) content of Noetia ponderosa erythrocytes in isosmotic (closed circles) and hypoosmotic (open circles) ASW. Vertical bars are ± 1 after hypoosmotic exposure, and little further decrease occurs subsequently (Fig. 3b). In addition, intracellular Cl~ decreases by 50% within 10 min of hypoosmotic expo- sure, from about 70 to 35 nmoles/106 cells (Fig. 3c). Thus, K+ and CT~, but not Na+, leave Noetia erythrocytes after hypoosmotic exposure, and in contrast with
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TIME (min) FIGURE 3. Intracellular Na+ (A), K+ (B), and Cl~ (C) content of Noetia ponderosa erythrocytes in isosmotic (closed circles) and hypoosmotic (open circles) ASW. Vertical bars are ± 1 after hypoosmotic exposure, and little further decrease occurs subsequently (Fig. 3b). In addition, intracellular Cl~ decreases by 50% within 10 min of hypoosmotic expo- sure, from about 70 to 35 nmoles/106 cells (Fig. 3c). Thus, K+ and CT~, but not Na+, leave Noetia erythrocytes after hypoosmotic exposure, and in contrast with the tau- rine efflux, this movement of intracellular ions begins immediately. The CT efflux from Noetia erythrocytes was only partially balanced by the K+ loss. Thus, other cations besides K+ (but not Na+) must leave the clam erythrocyte during the early phase of volume recovery. In the absence of Ca2+, the volume regulation in response to hypoosmotic ASW is partially inhibited (Fig. 1). Cells in the hypoosmotic Ca2+-free medium recovered slightly less than half the volume of control cells in normal hypoosmotic medium. Ca2+ lack did not affect the volume of erythrocytes in isosmotic ASW (Fig. 1). Isosmotic Ca2+-free ASW had no significant effect on cellular K+ (Fig. 4a). More- over, the usual hypoosmotic effect on cellular K+ content occurred whether or not Ca2+ was present in the medium (Fig. 4a). The effect of Ca2+ lack on intracellular Cl~ content was similar in pattern to that of K+. The Cl content of the cells was. 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, Ma
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
