Abstract:Hartley guinea pigs are widely used animal models of disease, particularly in studies of osteoarthritis. The purpose of this study was to investigate lesions in the costal cartilage from 16 male, 5- to 6-month-old Hartley guinea pigs. Routine histological sections from the costal cartilage and costochondral junction (longitudinal and cross sections) and sternum (for evaluation of bone marrow) were examined. All 16 (100%) animals had histological lesions involving the costal cartilage that included matrix degen… Show more
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