Table 1

Immunophenotypes of the stromal cells in the gastrointestinal stromal tissue

Immunohistochemical markers
Cell typesASMAHCDCD34CD31
ASMA, α smooth muscle actin; HCD, high molecular weight caldesmon; CD34+ cells, CD34 positive stromal cells/immature fibroblastic cells; ASMA+ cells, ASMA positive stromal cells/mature fibroblastic cells; PCF, colorectal pericryptal fibroblasts; +, positive; –, negative.
CD34+ cells1,2+
Endothelial cells1–3++
ASMA+ cells (except PCF)4–7+
Smooth muscle cells1,2,5–8++