start stage end stage mural cell pericyte ZFA:0009112 CL:0000184 was merged into CL:0000699. TAO:0009112 An elongated, contractile cell found wrapped about precapillary arterioles outside the basement membrane. Pericytes are present in capillaries where proper adventitial and muscle layer are missing (thus distinguishing this cell type from adventitial cells). They are relatively undifferentiated and may become fibroblasts, macrophages, or smooth muscle cells. CL:0000669 perivascular cell zebrafish_anatomy pericytes unknown adult