CCR1 and neoplasm: However, we found that CCR1/2/3 were barely expressed on non-CD11b+ or non-CD11c+ cells in the tumor-burdened lungs of KP or KP7 mice, which is consistent with an earlier report showing that mRNAs encoding CCR1/2/3 are mostly detected in monocytic cells or neutrophils in the tumors from NSCLC patients or mice36.