Fig 6. The production of C3 and C5 by HMVEC-d.

HMVEC-d were pre-incubated with plasma of patients with acute HSP (N = 30) or plasma of healthy controls (N = 30) for 48 hr, and then the cells were washed and re-cultured in serum free medium for another 48 hr. C3 (A) and C5 (B) levels in culture supernatants were analyzed by ELISA. * denotes p < 0.01.