Fig. 4

Representative images of lysozyme, PGP 9.5, PCNA, and vimentin expression in synovial tissues using immunocytochemistry. Immunocytochemistry of cells from equine SF a–d and SM e–h during their third passage to evaluate the positive expression of the cell surface markers lysozyme a, e, PGP 9.5 b, f, PCNA c, g, and vimentin d, h. 200× magnification