Fig 4. TAM promotes the migratory activity of TNBC cells.

(A) Representative images of the wound migration assay of MDA-MB-231 cells measured at 0 h, 6 h, 12 h, and 24 h under a phase-contrast microscope. (B) Time course of wound closures expressed as the remaining wound area relative to time point 0 h. Data are represented as mean ± SEM of 3–4 independent experiments, with significance level at *p < 0.05 vs control. TAMs, tumor-associated macrophages; TNBC, triple-negative breast cancer.