CLEC10A and carcinoma: Carcinoma cells richly express the Tn antigen (N-acetylgalactosamine [GalNAc]-OSer/Thr) (29, 30), which binds to the type II GalNAc-specific, C-type lectin domain family 10 member A (CLEC10A, CD301, also designated the human macrophage galactose-type lectin, hMGL, or simply MGL) on DCs and macrophages (31–33).