Engraving: Growth of chick embryo at days 19-20, 1625.
Licence: Public Domain Mark
Credit: Engraving: Growth of chick embryo at days 19-20, 1625. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: Engraving: Growth of chick embryo at days 19-20, 1625. Wellcome Collection. Source: Wellcome Collection.