abnormal kidney cortex morphology abnormal juxtaglomerular apparatus morphology MP:0002829 MPheno.ontology juxtaglomerular complex morphology any structural anomaly of the complex of modified smooth muscle cells consisting of juxtaglomerular cells, extraglomerular mesangium lacis cells, the macula densa of the distal convoluted tubule, and granular epithelial peripolar cells; these cells are found in the walls of afferent and efferent glomerular arterioles