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SlideshowReport

Human immunodeficiency virus.

Description
This color-enhanced photograph taken with an electron microscope shows a helper T cell (CD4 lymphocyte) being invaded by many small human immunodeficiency viruses. Like all viruses, HIV cannot reproduce itself. It must enter a lymphocyte and use that cell’s DNA to replicate itself. The lymphocyte is destroyed as the new viruses are released.  
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