Table 1.

Characterization of fibroblast cell cultures by immunohistochemistry†or flowcytometry‡

Antigen	Immunoreactivity*
Cytokeratin‡	−
Thy-1 (CD90)‡	+ +
Vimentin†	+ +
Fibronectin†	+ +
Smoothelin†	−
α-Smooth muscle actin†	+ −
Myosin†	+

^*Indicates no positive staining; ± indicates <5% positive staining; + indicates <50% positive staining; ++ indicates>50% positive staining. In flow cytometry – indicates no positive cells, and ++ indicates 100% positive cells.