] Zhu explained that the immune systems of some individuals ] may be capable of resisting HIV infection. These ] individuals who do not appear to be infected with HIV ] despite multiple sexual encounters with HIV infected ] partners are referred to as exposed seronegatives (ES). ] ] To be specific, any one who has conducted sexual ] activities at least twice weekly in four consecutive ] months with an HIV-infected partner might be identified ] as ES. ] ] Of 11 ES cases, two cases have later been identified as ] carrying the mutant genes. ] ] In Zhu's opinion, if medicine functioning similarly with ] the genes was put in the vagina and rectum, the HIV virus ] couldn't find its carrier to enter the human body and ] thus would be expelled. ] ] In Shenzhen, both confirmed samples are women who have ] been exposed to HIV for many years but remained ] uninfected. |