MRC1 and neoplasm: Flow cytometric analysis revealed no significant difference in the number of F4/80+ macrophages between tumours in ND-fed PyMT mice and those in HFD-fed PyMT mice, and CD11c+ M1-like macrophages, not CD206+ M2-like macrophages, were the major macrophage subtype in the tumours in both the ND-fed PyMT mice and the HFD-fed PyMT mice (Fig. 2d).