Table 1.
Immunophenotypes of the stromal cells in the gastrointestinal stromal tissue
| Immunohistochemical markers | ||||
| Cell types | ASMA | HCD | CD34 | CD31 |
| CD34+ cells1,2 | – | – | + | – |
| Endothelial cells1–3 | – | – | + | + |
| ASMA+ cells (except PCF)4–7 | + | – | – | – |
| Smooth muscle cells1,2,5–8 | + | + | – | – |
| PCF4,5 | + | + | – | – |
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.