EOL-1 cells were pre-incubated in control medium (Co) or in medium containing ponatinib, sorafenib, masitinib, nilotinib, imatinib, or dasatinib (each 10 or 100 nM) at 37°C for 1 hour. Then, migration of cells against SDF-1α (30 ng/ml) was determined in a double-chamber chemotaxis assay (4 hours) as described in the text. Numbers of viable migrated cells are expressed as percent of total (100% input) cells. Results represent the mean±S.D. of 4 independent experiments. Asterisk: p<0.05.