SCG5 and type 1 diabetes mellitus: Peptides 175, 148–1, 148–2, recognized by islets from donor 6579, are new T1D-associated epitopes from the previously characterized antigen CHGA, and peptide 191, recognized by donor 6550, is a new T1D-associated epitope from the previously characterized T1D-associated antigen SCG5 (Figure 6L; Table S9).