Scientists from the University of Southampton have created the Christmas tree and Christmas wreath with the help of human stem cells, according to the website of the University.
The green elements in the image is collagen, and the red fat cells that were extracted from the bone marrow of a person. As the researchers note, the color of the cells was slightly enhanced in order to make them clearer.
Usually collagen is painted in a blue hue, but the natural color of fat cells is red.
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