Fig. 3
From: The crude ethanol extract of Periplaneta americana L. stimulates wound healing in vitro & in vivo
The transwell system was used to detect the chemotactic motility of the HSF. a The migrated cells treated by the gradient concentration of the PAL extract were shown. b The migrated cells on the lower chamber membrane were counted. Differences between the experimental groups and control group were determined by Student’s unpaired t-test. **P < 0.01 significantly different from the control group