JAMA. 1926;86(15):1147-1148. doi:10.1001/jama.1926.02670410043025.
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Relative Sexuality  Before the Berliner medizinische Gesellschaft, Prof. M. Hartmann, whose researches on protozoa are well known, delivered an address recently on relative sexuality and its importance to fecundation. From numerous observations, partly his own and partly those of others, Hartmann concludes that every living cell is bisexual and possesses the complete female and male anlagen. That eventually the female or the male potentiality becomes preponderant is owing to the fact that one anlage is furthered or exists in a naturally dominant form, whereas the other anlage is either retarded or is less dominant. As the result of the preponderant influence of one or the other factor, a cell becomes definitely male or female with reference to another cell in which the opposite factor predominates. The female and male germinal cells are therefore not purely and absolutely female or male but are only relatively so. Hartmann assumes that the difference


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