Immunofluorescence light micrograph of a human embryo 11 days after fertilisation. The embryonic cells have begun to differentiate and self-organise.

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Immunofluorescence light micrograph of a human embryo 11 days after fertilisation. The embryonic cells have begun to differentiate and self-organise. The epiblast (white), which will develop into the foetus, creates a cavity (the pro-amniotic cavity) in which the foetus will develop. The other cells, whose nuclei (blue) 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.

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Size: 2765px × 3183px
Photo credit: © ZERNICKA-GOETZ LABORATORY, CAMBRIDGE UNIVERSITY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, 11, 11-day, background, biological, biology, black, cavity, cells, confocal, day, days, development, eleven, eleven-day, embryo, embryogenesis, embryology, embryonic, epiblast, extraembryonic, human, light, micrograph, microscope, microscopy, pluripotent, post-implantation, pro-amniotic, stem, vitro