Immunofluorescence light micrograph of four human embryos 10 days after fertilisation. The embryonic cells have begun to differentiate and self-organise. The epiblast (purple in embryo at bottom right), which will develop into the foetus, creates a cavity (the pro-amniotic cavity) in which the foetus will develop. The other cells, whose nuclei (red in embryo at bottom right) and cell membranes (green in embryo at bottom right) can be seen, will develop into the placenta and the yolk sac. At this stage the embryo would be implanted in the uterine wall. This embryo has been grown in vitro, allowing this developmental stage to be studied for the first time. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / ZERNICKA-GOETZ LABORATORY, CAMBRIDGE UNIVERSITY |
Bildgröße: | 3096 px × 2844 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |