part of start stage end stage kidney juxtaglomerular cell kidney granular cell ZFA:0005238 zebrafish_anatomy CL:0000648 2009-08-10T05:41:07Z Ceri TAO:0005238 renin secreting cell A smooth muscle cell that synthesizes, stores, and secretes the enzyme renin. This cell type are located in the wall of the afferent arteriole at the entrance to the glomerulus. While having a different origin than other kidney smooth muscle cells, this cell type expresses smooth muscle actin upon maturation. smooth muscle cell unknown adult