Effects of FMLP 10 nmol/L, plasminogen 0.43 CTA U equivalents/mL, or plasmin 0.43 CTA U/mL and the modulatory effect of t-AMCA on plasmin-induced monocyte migration. Chemotactic activity was evaluated for 90 minutes with polycarbonate membranes (pore size, 5 μm). **P < .01 v plasmin control. Results are the mean ± SEM of 4 experiments each performed in triplicate.