Holterman, L.

virus infection clone animal immunodeficiency rhesu disease immunodeficiency virus macaque monkey figure study progression rhesus macaques variant plasma passage j virol rhesus monkeys sequence model virol genome level analysis protein method vaccine amplification disease progression culture result month challenge primate retrovirus development isolation primer nature t-cell virus load number factor heeney replication serum pathogenesis antigen group strain disease course immunodeficiency viruses desrosier product stock co-receptor synthesis reaction fragment 1989. course chapter 1999. experiment polymerase region blood 1998. hiv-i science daniel primers macrophage netherland 1991. rt-pcr 1996. minute population