GAD1 and type 1 diabetes mellitus: The treatment of STZ-induced T1DM mice with adoptively transferred nBMCs or adoptively transferred dBMCs led to significant increase in the level of GAD comparing to that in STZ-induced T1DM mice treated with insulin (87.70 ± 2.55 pg/mg and 60.10 ± 1.42 pg/mg, respectively versus 41.33 ± 1.76 pg/mg) (Fig. 5D).