C3a induces chemotaxis of lineage-expanded hematopoietic cells.

Normal human myeloblasts (A), erythroblasts (B), and megakaryoblasts (C) were exposed in transwell chambers to medium alone (control), C3a, SDF-1, and C3a plus SDF-1. Data are pooled from quadruplicate samples from 3 independent experiments. *P < .00001.