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Show Find Sex Hormones Will Influence Eggs WOODS HOLE, MASS. Male sex glands of unhatched chicks were caused to develop decidedly female characters by injecting the female sex hormone substances theelin and theelol through the eggshells, in experiments experi-ments reported before the meeting of the Genetics Society of America here. The research was carried on by Dr. B. H. Willier of the University Univer-sity of Rochester and Drs. T. F. Gallagher and F. C. Koch of the University of Chicago. The theelin and theelol were injected in-jected in rather heavy quantities. From day to day, eggs were removed from the incubator, opened, and the developing embryo dissected. The ovaries of the chicks that would have grown up to be hens were not affected. Neither were the left sex glands of the chicks that might have been roosters. But the right sex glands developed, surrounding their characteristic male tissues, other tissues just as characteristically characteris-tically female |