antigen processing and presentation of peptide or polysaccharide antigen via MHC class II
peptide or polysaccharide antigen processing and presentation of via MHC class II
The process in which an antigen-presenting cell expresses antigen (peptide or polysaccharide) on its cell surface in association with an MHC class II protein complex.
biological_process
GO:0002504
antigen processing and presentation