INS and type 1 diabetes mellitus: Interestingly, oxPTM-INSP-3 and oxPTM-INSP-6, but not Nt-INSP-3 or Nt-INSP-6, were able to inhibit the binding of type 1 diabetes samples to oxPTM-INS (p<0.001), but not to Nt-INS (Fig. 3a–c,g–i).