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Credit
De la distinction originelle du testicule et de l'ovaire : caractère sexuel des deux feuillets primordiaux de l'embryon : hermaphrodisme morphologique de toute individualité animale : essai d'une théorie de la fécondation / par Édouard van Beneden. Public Domain Mark. Source: Wellcome Collection.
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This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.