SLC30A1 and type 2 diabetes mellitus: In comparison, expression of the type 2 diabetes gene Slc30a8 that encodes the β-cell specific granular zinc transporter ZnT8 was not regulated in parallel with Znt1 or Mts, in agreement with the observations that it is not induced by ZnSO4[30] nor by ZnCl2 (the present study).