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Changes to supraspinatus tendon structure obvious by 8 weeks of overuse. The insertion region of the 4-week control (A) and 8-week control (C) tendons are contrasted with insertion region of the 4-week overuse (B) and 8-week overuse (D) tendons. The tissue structures of the midsubstance regions (E-H) were comparable across all groups. n=2, scale bar=100μm.
