Biology - Human Health and Diseases Question with Solution | TestHub

Human Immunodeficiency Virus (HIV) specifically targets and parasitizes helper T cells in the human immune system.

Helper T cells are also known as ${\text{T}}_4$ lymphocytes or CD4+ T cells because they possess CD4 receptors on their surface. The virus uses these receptors to attach to and enter the host cell.

By infecting and subsequently destroying these ${\text{T}}_4$ lymphocytes, HIV progressively weakens the immune system, which can eventually lead to Acquired Immunodeficiency Syndrome (AIDS).

Answer: ${\text{T}}_4$ lymphocytes