Figure 1From: Recurrent exercise-induced acute kidney injury by idiopathic renal hypouricemia with a novel mutation in the SLC2A9 gene and literature review Secondary renal biopsy revealed very slight mesangial cell proliferation and normal arterioles by light microscope, with moderate vacuolar degeneration in the tubular epithelial cells (↖), accompanied by interstitial edema and small amounts of lymphocytes and monocyte infiltration. A &B × 100, and C &D × 200.Back to article page