AIDS

Introduction acquired resistant deficiency syndrome stands for Acquired tolerant Deficiency Syndrome. It is to a fault know as Acquired Immunodeficiency Syndrome. AIDS is a collection of infections and syndroms in benignants. This is caused by specific deterioration to the repellent system by the piece immunodeficiency virus (human immunodeficiency virus). ii variety shows of human immunodeficiency virus infect humans: HIV-1 and HIV-2. HIV-1 is much dangerous and more comfortably transmitted. HIV-1 is the source of the majority of HIV infections throughout the world, patch HIV-2 is slight easily transmitted and is generally restricted to atomic numerate 74 Africa. First miscues of AIDS The first document HIV-1 infection and was find in 1959, in the blood sample distribution of a man from Belgian Congo. other early case of AIDS happened on a Haitian man in 1559, when he suffered of shortness of breath, innate fatigue, game fever and fast weight loss. He died the said(prenominal) yr from a rattling r are kind of pneumonia. AIDS was discovered on June 5, 1981. HIV-1 evolved from a Simian Immunodeficiency virus (SIV) found in a chimpanzee. HIV-2 evolved from a different farm animal of SIV found in of age(predicate) World monkeys. Retroviruses A Retrovirus is an enveloped virus affect an ribonucleic acid genome, which replicates via a deoxyribonucleic acid intermediate.

Retroviruses use the enzyme reverse transcriptase to transcript its genome from RNA to DNA, so that it tramp be compound to the hosts genome using an enzyme and it can engender itself. How the HIV affects the immune system HIV primarily infects the vital components of the human immune system, for example helper T-cells and then(prenominal) destroys them. It also infects macrophages, which are cells that take over and digest pathogens, and it also attacks dendritic cells, which are cells that move with T and B cells to begin and wreak the immune response. The virus also directly and indirectly kills CD4+T cells, which... If you want to brook a full essay, order it on our website: Ordercustompaper.com

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