Abstract
IT has long been suspected that the contractile vacuoles of Protozoa maintain the internal osmotic pressure of the organism above that of the external medium, and it has been argued that, if this is correct, the rate of vacuolar output should be reduced when the external osmotic pressure is raised. This has been found to be true for various Ciliata, and recent work has made it necessary to examine evidence of this nature more critically.
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KITCHING, J. Effects of Hypertonic Media on the Contractile Vacuoles of Protozoa. Nature 138, 287 (1936). https://doi.org/10.1038/138287a0
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DOI: https://doi.org/10.1038/138287a0
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