negative regulation of antigen processing and presentation of peptide or polysaccharide antigen via MHC class II
negative regulation of antigen processing and presentation of peptide or polysaccharide antigen via mhc class ii
down-regulation of antigen processing and presentation of peptide or polysaccharide antigen via MHC class II
down-regulation of antigen processing and presentation of peptide or polysaccharide antigen via mhc class ii