Variations in serum sCD14 concentrations and blood CD4 lymphocyte number for some patients in the longitudinal study. Changes over time in serum sCD14 concentration (—) and blood CD4 lymphocyte number (––) for 6 patients are shown. Patients A (with MAC infection), B (with disseminated Kaposi’s sarcoma [KS]), and C (MAC infection) died during the study period and all had increasing sCD14 values and decreasing number of blood CD4 lymphocytes. Patients D (no clinical events), E (with disseminated cutaneous Herpes simplex virus type 1 infection), and F (no clinical events) survived the study period and all had relatively stable sCD14 levels and decreasing CD4 cell numbers. Arrows indicate sampling time point with ongoing clinical event and CDC classification; death is indicated with a cross for patients A, B, and C.