TNF and type 1 diabetes mellitus: The administration of STZ-induced T1DM mice with adoptively transferred nBMCs and adoptively transferred dBMCs significantly decreased the serum level of TNF-α comparing to that in STZ-induced T1DM mice treated with insulin (28.73 ± 1.61 pg/ml and 58.80 ± 4.06 pg/ml, respectively versus 73.50 ± 5.42 pg/ml) (Fig. 4B).