CD80 and type 1 diabetes mellitus: Post stimulation, the T1D group displayed a higher frequency of monocytes expressing CD80 (76.16 ± 5.42% vs 45.0 ± 7.7%) (p = 0.02) but a similar frequency of CD86 + monocytes (96.68 ± 1.05% vs 86.29 ± 3.3%) as compared to the HC group, respectively.