Confocal laser scanning microscopy (CLSM) images of collagen and elastin in articular cartilage. (A-C) Images showing zonal organization of collagen fibers were taken from picrosirus red-stained slides of articular cartilage from kangaroo femoral condyle. These images resemble Figure 2 of our article in . (D-F) Images showing different organizations of elastin fibers in the superficial zone of articular cartilage of kangaroo femoral condyle. These images resemble Figure 7 of our article . X and Y coordinates indicate images that were parallel to the cartilage surface and taken from a transverse view; X and Z coordinates indicate images that were vertical to cartilage surface and taken from a longitudinal view.