Medical visualization taken from human scanned data showing an embryo and it's yolk sac at week 6 after fertilization. The embryo is now the size of a grain of rice (about 4 mm). With the placenta still forming, the embryo depends on the yolk sac for nourishment. Inside the yolk sac, tiny structures called 'blood islands' form. These will become the first blood cells and the first blood vessels. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source / TheVisualMD |
Bildgröße: | 2669 px × 2000 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |