Knockdown has no effect, 4 experiments: p<0.05 with A fields as n 11.9%; B inserts as n 1.5%; C percent of control, control fixed at 100% 8.9%; D percent of control, one-sample vs 100 4.6%; E log ratio per experiment 4.8% Knockdown cuts migration by 30%, 4 experiments: p<0.05 with A fields as n 78.4%; B inserts as n 32.9%; C percent of control, control fixed at 100% 62.2%; D percent of control, one-sample vs 100 47.8%; E log ratio per experiment 39.5% Knockdown cuts migration by 30%, 8 experiments: p<0.05 with A fields as n 95.6%; B inserts as n 64.5%; C percent of control, control fixed at 100% 85.7%; D percent of control, one-sample vs 100 82.3%; E log ratio per experiment 85.2%