A longstanding theory of how HIV slowly depletes the body's capacity to fight infection is wrong, scientists say.HIV attacks human immune cells, called T helper cells. Loss of these cells is gradual, often taking many years.
It was thought infected cells produced more HIV particles and that this caused the body to activate more T cells which in turn were infected and died.
Imperial College London modelling suggests that, if that was true, cells would die out in months not years.
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