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SEM of a hatched blastocyst 6 days old

SEM of a hatched blastocyst 6 days old

P680/0393

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Credit

DR YORGOS NIKAS / SCIENCE PHOTO LIBRARY DR YORGOS NIKAS / SCIENCE PHOTO LIBRARY

Caption

Hatched blastocyst embryo. Coloured scanning electron micrograph (SEM) of a human embryo at the blastocyst stage, six days after fertilisation. It has fully hatched from the zona pellucida (not seen), a protein shell that originally surrounded the unfertilised egg. The blastocyst is a hollow ball of cells with a fluid centre. Each cell is called a blastomere. Most of these embryo cells will form the placenta and membranes around the embryo, and only a small group (the inner mass) form the embryo proper. At this stage the blastocyst is in the uterus (womb) and is ready to implant on the endometrial wall of the womb. Magnification: x520 at 6x7cm size. Magnification;x480 at original 6x7cm size.

Release details

Model release not required. Property release not required.

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