Abstract
Summary
In a study of heat death, it has been shown that the marine annelid, Phascolo-soma gouldii, releases a heat stable, non-dialyzable toxic factor, capable of causing death when injected into normal worms. This toxic substance, originated from the cells of the coelomic fluid, has been partially isolated by saturation with ammonium sulfate. A semi-microbiological assay has been described.
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