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The Protein Machine That Copies Genes

The Protein Machine That Copies Genes | Science News | Scoop.it

A protein machine unwinds DNA molecules... This crescent-shaped protein complex (yellow in the image) wraps around and bends DNA (the red and blue complex) to help unwind it.

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Human Macrophage

Human Macrophage | Science News | Scoop.it
Scanning electron micrograph (SEM) of a human macrophage on the surface of an alveolus. Found mainly in the liver and lymph nodes, macrophages are a part of the immune system.
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