(IMAGE)

Goethe University Frankfurt

Caption

This shows in vivo-imaging of the blood circulation system in a three-day-old zebrafish larva. The left picture shows a side view of the head, the middle picture a side view of the trunk and the right picture a back view of the head. Fluorescent reporter genes reveal that the blood vessels (green) are fully formed at this point. The individual blood cells (red) can also be seen circulating in the blood vessels.

Credit

Acker-Palmer

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