This electron microscope image made available by the U.S. National Institutes of Health shows a human T cell, in blue, under attack by HIV, in yellow, the virus that causes AIDS. The virus specifically targets T cells, which play a critical role in the body's immune response against invaders like bacteria and viruses. Colors were added by the source. On Thursday, March 6, 2019, researchers reported that monthly shots of HIV drugs worked as well as daily pills to control the virus that causes AIDS in two large international tests. (Seth Pincus, Elizabeth Fischer, Austin Athman/National Institute of Allergy and Infectious Diseases/NIH via AP)
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