Fig. 1.

Spontaneous production of platelet-activating factor (PAF) or IL-10 from cells of 15 normal subjects (Control) or from 13 active and 14 inactive SLE patients. (a) Cell-associated PAF spontaneously synthesized by 1 × 10⁶ monocytes after 15 min incubation at 37°C. (b) Spontaneously released IL-10 by 1 × 10⁶ peripheral blood mononuclear cells after 24 h incubation at 37°C. anova with Newman Keuls multicomparison test was performed among active SLE patients versus inactive SLE and control subjects (*P < 0·05) and inactive SLE versus control subjects (no statistical difference).