Models Class 1 Class 2 Class 3 Class 4
Mouse Reg1 Reg2 Reg3a, Reg3β, Reg3g, Reg3δ Reg4
Human REG 1α, REG 1β   REG3a/β,REG3γ REG4
Rat Reg1a   Reg3α, Reg3β, Reg3g Reg4
Hamster   Reg2 INGAP, Reg3g,  
Table 1: Current members of the family of Reg proteins in mouse, human, rat and hamster.