TLR2 and breast neoplasm: Additionally, in Tlr2–/– MMTV-PyMT mice with spontaneous breast tumors and Tlr2–/– B16F10 tumor-bearing mice, the infiltrations of CD11b+ cDC2s and CD103+ cDC1s in tumors were comparable to that of WT counterparts (Supplementary Fig S4C and D).