Mouse foetus, SEM

Mouse foetus, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Mouse foetus. Coloured scanning electron micrograph (SEM) of a 17-day-old mouse foetus (Mus musculus). The embryo has started to develop limb buds (left). The head and tail are differentiating and the heart bulge is visible (centre). The embryo attaches to the uterine epithelium about five days after ovulation and the pregnancy lasts for approximately three weeks. Within the uterus the embryo lies inside a fluid-filled sac, known as the amniotic cavity, which is enclosed by double membranes. The fluid protects the embryo against the pressure of the internal organs of the mother and from any injury from the mother's movements.

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Keywords: 17 days old, 17-day-old, anatomical, anatomy, animal, biological, biology, coloured, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, developing, differentiation, false-colour, false-coloured, fetus, foetus, healthy, heart bulge, limb buds, mouse, mus musculus, normal, one, reproduction, rodentia, scanning electron micrograph, scanning electron microscope, sem, single, unborn, young

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