Fig. 1From: Serum complement C4 is an important prognostic factor for IgA nephropathy: a retrospective studyCorrelations between serum C4 and clinical parameters, including 24-h urinary protein excretion (UPE) (a), estimated glomerular filtration rate (b), serum IgA (c), serum C3 (d) and serum albumin (e)Back to article page