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Microscopic anatomy of cranial cruciate ligaments (CCL) with a most likely traumatic rupture. (a) Ruptured CCL of a 7-year-old cat, weighing 3.3 kg, periodic acid–Schiff (PAS) staining; (b) ruptured CCL of an 8-year-old cat, weighing 6.8 kg, PAS staining, cartilage cells lying in small groups (arrows)
