THE INJECTION OF SULFATES INTO VALONIA.
Potassium chloride and sulfate were injected into the vacuole of Valonia. The surviving cells tolerated the presence of these solutions. Sulfate, although ordinarily absent from the sap, is not rapidly eliminated when introduced. Hence the sulfate occasionally found in cells of normal appearance may have entered due to temporary injury followed by recovery.
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Laboratories of The Rockefeller Institute for Medical Research.