Fig. 5From: Overexpression of aquaporin 4 in articular chondrocytes exacerbates the severity of adjuvant-induced arthritis in rats: an in vivo and in vitro studyIdentification and AQP4 immunocytochemistry staining in cultured articular chondrocytes. a Morphology of cultured cells after one passage (×100). b Positive toluidine blue staining of glycosaminoglycan in cultured cells (×100). c Weak AQP4 immunoreaction in cultured normal articular chondrocytes (×400). d Strong AQP4 immunoreaction in cultured AIA articular chondrocytes (×400)Back to article page