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Representative images of PSR staining carried out on formaldehyde-fixed sections from femoral articular cartilage of pigs. Vertical section of transitional and radial zones of femoral articular cartilage from the Fx group, the fundectomized group; the SHO group, the sham-operated group; and the 2-Ox group, supplemented with 2-Ox after fundectomy. Magnification ×100.
