| 单词 | hiv-2 | 
| 释义 | > as lemmasHIV-2  2.  With distinguishing numeral (now as  HIV-1 and  HIV-2): either of the two recognized types of this virus.HIV-1 and HIV-2 are believed to have evolved in Africa from strains of simian immunodeficiency virus affecting chimpanzees and sooty mangabeys, respectively. HIV-1 now has a global distribution, and tends to cause more severe disease. HIV-2 remains endemic mainly in West Africa. ΚΠ 1986    Courier-Mail 		(Brisbane)	 12 Aug. 3/6  				He said the antigens of HIV II would have to be incorporated into blood testing to protect supplies. 1990    Nature 12 July 95/2  				The researchers do not yet know whether the patient was infected with HIV-1 or HIV-2, but are planning to sequence the proviral DNA to find out. 1992    Milwaukee 		(Wisconsin)	 Jrnl. 23 July  a 3/5  				Adamson said the blood center would discuss ways to ‘keep tight’ on the blood-screening process—which includes..a blood test that screens for eight sexually transmitted diseases, including HIV-1 and the rarer HIV-2. 2004    N.Y. Rev. Bks. 23 Sept. 53/3  				There are two critically important proteins on the surface of HIV-1, which are called gp120 and gp41. 2009    Nature 23 July 470/2  				Today's pandemic strain of HIV-1 crossed the species barrier from chimpanzees (Pan troglodytes) to humans less than 100 years ago. < as lemmas  | 
	
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