CD14 and breast cancer: However, the percentages of M2a- (p < 0.0001; Fig. 2b), M2b- (p < 0.0001; Fig. 2c), and M2c-like macrophages (p < 0.0001; Fig. 2d) in the PM-2 K+CD14+ cell population were significantly lower in patients with breast cancer than in healthy controls.