Question

HIV mainly infects
1.cytotoxic
2.helper lymphocytes
3.killer lymphocytes
4.cell mediated T-lymphocytes

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Answer 1

Answer:

1.Cytotoxic refers to a substance or process which results in cell damage or cell death. 

2.External Websites. Helper T cell, also called CD4+ cell, T helper cell, or helper T lymphocyte, type of white blood cell that serves as a key mediator of immune function. 

Explanation:

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Answer 2

Human immunodeficiency virus (HIV) causes AIDS, and the HIV virus infects T-helper lymphocytes (CD4+).