Figure 2From: Millicurrent stimulation of human articular chondrocytes cultivated in a collagen type-I gel and of human osteochondral explants H&E and safranin O staining of in-vitro cultivated specimens. Hematoxylin-eosin staining (A) and safranin O staining (B) of collagen type-I gel seeded with human chondrocytes and cultivated for 1 and 3 weeks in-vitro. Samples were either left untreated (control) or stimulated by millicurrent treatment. Original magnification ×630.Back to article page