Antibody detects endogenous levels of total AKR1C2. DD1 is also designated AKR1C1, DDH or DDH1, while DD2 also can be designated AKR1C2, dDD, BABP or DDH2. AKR1C3 and 3 alpha-HSD are alternate designations for human DD3 (which is referred to as AKR1C18 i