ウニの卵の人工的賦活に伴う電氣容量の變化

概要

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Measurements of capacitance were made on suspensions of unfertilized sea urchin eggs, treated with various agencies most of which are known to induce parthenogenetic developments of the eggs. Characteristic changes of capacitance quite similar to those taking place following fertilization could be observed when the eggs were treated to an optimal degree. In case the treatments were other than optimal, only partial changes of capacitance were observed. A close correlation was pointed out between the changes of capacitance and the reactions of the cortical cytoplasm, characterized by disintegrations of cortical granules. The changes of capacitance following fertilization could be suspended by placing the eggs immediately after fertilization in sea water added with acetone or butyric acid, thereby the spontaneous disintegrations of the cortical granules being arrested.
1949-07-15