MUC1 peptide STAPPVHNV (HLA-A*0201) is a single peptide for stimulation of T cells. The peptide from Mucin 1 (MUC1) is synthesized as it is presented by the MHC class I HLA-A*0201 allele and can be used for stimulation of antigen-specific T cells in T cell assays such as ELISPOT, ICS, cytotoxity or proliferation assays.