Friday, July 10, 2020
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Evolution (1)

Україна
New Rada
Coronavirus
The Chernobyl disaster

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Pictures

EN_00966278_5567
EN_00966278_5567

Main cellular elements of blood, illustrating their origin from embryonic stem cells found in the umbilical cord. The evolution of cell types is shown in the foreground, left to right: platelets, red blood cells, and a granulocyte. A stem cell (center) is shown arising from the umbilical cord (background).

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