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The comparison of activated fibroblast and resting fibroblast cells. Resting fibroblast cells are morphologically spindle shaped in contrast to activated fibroblast cells which are stellate shaped. Activated fibroblast cells express α-SMA, FAP and PDGFRβ. FAP, fibroblast activation protein; FSP1, fibroblast-specific protein 1; PDGFRβ, platelet-derived growth factor receptor-β; α-SMA, α-smooth muscle actin.
