Influence of C3a on chemotaxis of CD34⁺cells.

Chemotaxis of normal BM CD34⁺ cells was evaluated toward medium alone (control), C3a, SDF-1β, or C3a plus SDF-1β. Data are pooled from quadruplicate samples from 3 independent experiments. *P < .00001 compared with SDF-1β alone at low dose (10 ng/mL).