Illustration of a female pelvis showing dizygotic twins in the uterus (womb). Dizygotic, or non-identical, twins develop when two separate eggs are released from the ovaries and are fertilised simultaneously. Often, as here, they are each contained in their own amniotic sac. From An Improved System of Midwifery, by Wooster Beach (1794-1868), published in 1851. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / National Library of Medicine |
Bildgröße: | 2890 px × 3765 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |