Fig. 5From: Identification of circular RNA BTBD7_hsa_circ_0000563 as a novel biomarker for coronary artery disease and the functional discovery of BTBD7_hsa_circ_0000563 based on peripheral blood mononuclear cells: a case control studyValidation of UBB (polyubiquitin-B) expression levels via western blot (A) The representative western blot image. (B) The statistical result of grayscale values (**: P < 0.01). The entire lane of each sample was used to determine the grayscale values. CAD, coronary artery disease; UBB, polyubiquitin-BBack to article page