I . IntroductionIn 1981 , a cluster of cases of Pneumocytis pneumonia appeared in the Los Angeles area . This highly rare disease was usually seen only in persons who were immunosuppressed . Investigators soon correlated the appearance of this disease with an unusual congeneric incidence of a rare form of cancer of the beat and riptide vessels called Kaposi s sarcoma . The people affected were all young butch workforce , and all showed loss of immune function . By 1983 , the pathogen make the loss of immune function had been identified as a retrocomputer virus that selectively infects certain T cells . This virus is now cognise as human immunodeficiency virus (HIV HYPERLINK http / vane .questia .com /SM .qst ?act adv contributors Richard 20C 20Stroh man dcontributors Richard 20C 20Strohman Strohman , 2003There have been s ome(prenominal) theories rough the cable of HIV . It is now believed that it arose by mutation of a virus that had been endemic in some areas of central Africa for many a(prenominal) old age .
The virus has been found in blood line samples preserved from as early as 1959 in several African nations and in EnglandThesis Statement : This investigates why HIV is much(prenominal) a happy pathogen and other details that an individual should have it off about HIVII . belles-lettres ReviewA . Opportunistic OrganismsAlthough it is convenient to categorize symbiotic relationship by type we must keep in mind that downstairs certain conditions the relationship can shift . For example , pron e proper circumstances , a mutualistic exis! tence such as E . coli , can become painful . E . coli is...If you regard to get a full essay, wander it on our website:
OrderEssay.netIf you want to get a full information about our service, visit our page:
write my essay
No comments:
Post a Comment