Figure 3. Urinary AG31 levels distinguish between stages and grades of bladder cancer. (A, B) Urinary AG31 levels of bladder cancer patients with different disease stages versus healthy controls in the test groups (A) and in the validation groups (B). (C, D) Urinary AG31 levels of bladder cancer patients with different grades versus healthy controls in the test groups (C) and in the validation groups (D). HC, healthy controls; RLU, relative light unit.