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Motility of telomerase-immortalized fibroblasts expressing v-Fos. (A and B) A wound was made in a confluent monolayer of Tif-puro (A) and Tif-Fos (B) cells, and the area was marked for identification and photographed after 0, 4 and 12 h. (C) Three independent areas of each wound made in Tif-puro (gray bars) and Tif-Fos (black bars) were measured, and the error bars show the standard deviation of the mean percent wound closure after 4, 7, and 23 h.
