CXCR5 and type 1 diabetes mellitus: Analogous to our earlier analysis [22], we confirmed in this cohort that both children with newly diagnosed T1D and AAb+ children exhibit a higher frequency of CXCR5−PD‐1hi cTph cells compared with healthy, age‐matched controls (Figure 1B), while the differences in the frequencies of CXCR5+PD‐1hi cTfh cells were less pronounced (Figure 1C).