I recently ran across a wonderful FREE video showing an HIV-infected cell spreading the virus to a nearby cell. Through the use of green fluorescent protein (GFP) staining methods, you can easily see the viral particles moving from the infected cell to a previously uninfected cell.
Some of you also teach microbiology or pathophysiology, where this video would be especially useful . . . but our A&P students might take more of an interest in our discussion of immunity and infections.
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