Fig. 1.

Mean fluorescent intensities (MFI) of CD11a, CD62L and CD44 expression on peripheral blood CD4 lymphocytes (a), CD8 lymphocytes (b), monocytes (c), and neutrophils (d). Three groups of individuals were assessed: laboratory controls (□), HIV-1-infected with CD4 counts ≥ 200/μl (hatched), and HIV-1-infected with CD4 counts < 200/μl and an AIDS-defining illness (▪). Error bars indicate + 1 s.d. The two HIV-infected groups were compared with the control group for statistically significant differences: *P < 0.05; **P < 0.01.