Chicken embryo development, illustration. The development of the embryo in the egg is shown from day 7 (top left) to day 13 (bottom left). During development the embryo is nourished by the yolk (yellow). The chick will hatch on day 21. 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: | - |