MANFRED KAGE / SCIENCE PHOTO LIBRARY MANFRED KAGE / SCIENCE PHOTO LIBRARY
Cat embryo (2 weeks). Macrophotograph of a cat embryo at 2 weeks gestation. The brain (upper right) and the eye (black, upper centre) are visible, with the spinal cord running along the back to the tail (left side). The limbs have started to form (centre and lower right), and the remains of the umbilical cord can be seen at centre just above the tail (red). Internal organs can be seen under the front limbs (centre). At this stage of development the heart and liver would be forming. A cat embryo takes 63-68 days to gestate. Magnification: x5 at 6x7cm size.
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