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First, there are the body's immune cells, known as CD4 cells. Their normal job is to recognise and neutralise everything foreign, in other words, everything that does not belong to our own body, such as disease agents. But what makes the virus so treatening is that its prime target is precisely these "guardians of the immune system". The virus gradually destroys the ability of the CD4 cells to carry out their normal function of eliminating intruders. |
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