Fig. 2From: Pulsed electromagnetic fields combined with a collagenous scaffold and bone marrow concentrate enhance osteochondral regeneration: an in vivo studyHistological images of the osteochondral lesions: a Group 1 – scaffold; b Group 2 – scaffold seeded with BMC; c Group 3 – scaffold and PEMFs; d Group 4 –scaffold seeded with BMC and PEMFs. H = Hypocellularity; C = Chondrocyte cluster. Safranin-O/Fast Green staining. Magnification of 4XBack to article page