Figure 1

Baseline distributions of HIV concentrations and CSF WBCs in relation to blood CD4 cell counts in the 100 subjects analyzed cross-sectionally. Individual panels show: (A) plasma HIV RNA, (B) CSF HIV RNA, and (C) CSF WBC counts in relation to blood CD4 counts. The vertical dotted lines in each panel separate the subjects into blood CD4 quartiles. The Symbol key appears in the bottom right panel, red boxes indicate patients off treatment, while blue circles indicate those on treatment.