Define = Human virus
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The human immunodeficiency viruses( HIV) are two species of Lentivirus that infect humans. Over time they cause acquired immunodeficiency syndrome, a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive.
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They are organisms that are not truly living . Is considered as living nor non living . Have either DNA or RNA as genetic material . No virus contain both . Virus infecting plants have ss RNA, animals DNA. Are made of vapid, sub units capsomers . Ceystallysed by Stanley. Eg it cause leaf curling , spots in plants . In humans aids caused by HIV virus capable of self replication . Discover in USA first .
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