Fig. 4. Inhibition of Cxcr2 induces iNOS+ macrophage infiltration and TUNEL+ apoptotic cells.
a Detection of macrophage markers (F4/80, iNOS, and arginase-1) by immunohistochemistry or apoptotic cells using TUNEL (brown) and K-19 double staining in PKF and PKF2h mice (7 wo). Scale bars, 100 μm. Insets: 400× magnification. b Quantification of F4/80+, iNOS+ or arginase-1+ macrophages and TUNEL+ apoptotic cells in the tumor location. Data are medians ± SD. *p < 0.05; **p < 0.01