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Aids Is Becoming So Widespread
Part I of Essay
The disease called aids is becoming very widespread in the United States. The
question is why. In the following paragraphs the answers to this question will be answered.
Aids is the final, life-threatening stage of infection with human immuondeficiency
virus (HIV). Aids .... Part II of Essay
....
AIDS is caused by two viruses that belong to a group called retroviruses. The virus
became known as HIV-1. In 1985, scientists in France identified another closely related virus
that produces AIDS. This such virus became known as HIV-2 and occurs mainly just in Africa.
The virus,HIV-1 is spread throughout the world . HIV
infects certain white blood cells, including T-helper cells and macrophages, that play key roles in
the functioning of the human immune system. The virus attaches to certain molecules found only
on the surfac ....
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Words: 973 - Pages: 4
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