Correlation between B7-H1 expression and CD4⁺ T-cell counts and between B7-H1 expression and HIV plasma viremia in HIV-infected patients.

Panels show the correlation between CD4 counts and the percentage of unstimulated CD3⁺/B7-H1 (A), unstimulated CD19⁺/B7-H1 (B), mitogen-stimulated CD14⁺/B7-H1 (C), and mitogen-stimulated CD19⁺/B7-H1 (D). Panel E shows the correlation between CD4 counts and the expression of B7-H1–specific mRNA in unstimulated PBMCs. (F-G) The correlation between HIV plasma viremia and the percentage of unstimulated (F) and mitogen-stimulated CD19⁺/B7-H1 (G) cells.