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Biomedicine

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HIV infecting a T cell

OFFENSIVE MEASURES  A combination of powerful antibodies might be able to stop HIV (yellow) before it infects, as is happening to a T cell (blue) in this colorized micrograph.

sea slug

SLIMED  When startled, the dusky slug (Arion subfuscus) produces a goopy defense slime that slows down predators. Scientists are studying the chemical structure of this goo to make better surgical adhesives.

illustration of neurons

DOPAMINE DAMAGE  In Parkinson's disease, a dangerous form of the chemical messenger dopamine may help destroy the nerve cells that produce it, a new study suggests.

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