GAD2 and type 1 diabetes mellitus: Further characterization of the CD3-CD8dull subset evidenced that percentages of CD3-CD8dull CD56+ GAD65 AA 114–122 pentamer reactive cells were significantly higher in T1D patients than in controls (Fig 3A and 3B, KS test p<0.05; Unpaired t test with Welch's correction p = 0.0411).