Fig. 2
From: Effect of electromagnetic fields on human osteoarthritic and non-osteoarthritic chondrocytes
Histology and Immunohistochemistry (IHC) staining of one OA-patient and one non-OApatient pellet cultures after 5 mT EMF exposition (b, f, j, n, d, h, l, p) or without EMF exposition (a, e, i, m, c, g, k, o). Safranin-O staining (a, b, c, d) and alcian blue staining (e, f, g, h) was positive for all pellet cultures. IHC for collagen type II was much more obvious for OA pellet culture after EMF exposition (j) and non-OA pellet cultures with and without EMF exposition (k, l). IHC for collagen type I of OA pellet cultures (m, n) showed a weaker staining than non-OA pellet cultures (o, p)