如果周围有艾滋病病人,我们应该怎么做。英语作文

发布网友发布时间：2024-10-22 14:28

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热心网友时间：2024-10-22 14:34

AIDS is the abbreviation1) of ACQUIRED IMMUNE DEFICIENCY SYNDROME．It is a complicated illness that may involve several phases．it is caused by a virus that can be passed from person to person．AIDS impairs the human body’s immune system,the system responsible for keeping off disease,and leaves the victim easily affected by various infection．
The virus enters the bloodstream and destroys certain white blood cells,called T lymphocytes2),which play a key role in the functioning of the immune system．The virus can also infect other types of cells in the body,including the immune－system cells knows as macrophages3)．Unlike T lymphocytes,however,macrophages are not killed by the virus．

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