human_reference_atlas part of has characterizing marker set has marker component REN cell cell type (from CL) secretory cell smooth muscle cell kidney granular cell juxtaglomerular 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. juxtaglomerular granular cell (renin positive) Juxtaglomerular granular cell (Renin positive) JG cell CT FMA:84138 renin secreting cell CL:0000648 Homo sapiens sequence collection kidney juxtaglomerular apparatus kidney blood vessel kidney vasculature