Abstract
Abstract Experiments have been performed about one year ago with the purpose of examining the presence of group specific substances in human cells other than erythrocytes. We know of a few contributions dealing with this and related subjects. One is a paper on the organs of dogs by von Dungern and Hirschfeld (1), another is by Halpern (2) and a third is a communication by Ashby1 of which only the title is available. Of particular interest was the behavior of the sperm cells. If they were found to contain group specific substances these should be present in the cells along with those which determine the heredity of the blood groups. The interesting question then, would arise whether the specifically absorbing substances, namely the isoagglutinogens are themselves involved in the inheritance phenomenon, or not. A similar question presents itself with regard to the species specific substances. The experiments yielded clear-cut results as to the presence of group specific factors in the sperm cells.
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