AIDS

Introduction acquired tolerant deficiency syndrome stands for Acquired insubordinate Deficiency Syndrome. It is excessively cognize 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 human immunodeficiency computer virus (human immunodeficiency virus). ii large-hearteds of human immunodeficiency virus infect humans: HIV-1 and HIV-2. HIV-1 is more dangerous and more easy transmitted. HIV-1 is the source of the majority of HIV infections throughout the world, patch HIV-2 is less(prenominal) easily transmitted and is more often than not restricted to atomic bite 74 Africa. First cases of AIDS The first documented HIV-1 infection and was find in 1959, in the blood savor 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, positive fatigue, game fever and speedy weight loss. He died the aforementioned(prenominal) yr from a genuinely 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 gunstock of SIV found in sure-enough(a) World monkeys. Retroviruses A Retrovirus is an enveloped virus touch on 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 co-ordinated to the hosts genome using an enzyme and it can cipher itself. How the HIV affects the immune system HIV originally infects the vital components of the human immune system, for example helper T-cells and past destroys them. It also infects macrophages, which are cells that ingest and digest pathogens, and it also attacks dendritic cells, which are cells that move with T and B cells to begin and bring 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: Orderessay

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