Table.

Stromal Cell Types and Functions

Stromal Cell Type	Phenotypic Markers	Origin	Function
Keratocytes	Keratocan, vimentin	Neural crest	Maintain collagen fibrils and matrix, EBM, DBM
Corneal fibroblasts	Vimentin	Keratocytes	Early matrix production, growth factor production (HGF, KGF), precursor to myofibroblasts
Fibrocytes	CD34, CD45, COL I	Bone marrow derived	Precursor to myofibroblasts
Immature myofibroblasts	Vimentin	Corneal fibroblasts, fibrocytes	Precursor to myofibroblasts
Mature myofibroblasts	Vimentin, SMA, desmin	Immature myofibroblasts	Fibrosis, ECM production

*HGF, hepatocyte growth factor; *KGF, keratinocyte growth factor; SMA, α-smooth muscle actin; COL I, collagen type I; EBM, epithelial basement membrane; DBM, Descemet's basement membrane.