Fig. 4.
Wound healing activity of untreated and treated A549 and MCF-7 cells observed under a light microscope (100×). a Representative cell migration images of wounded A549 cells monolayer treated with ETME; b Representative cell migration images of wounded MCF-7 cells monolayer treated with ETME. c, d Effect of ETME on the secretions of MMP-9 in A549 and MCF-7 cells observed by gelatin zymography