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Evaluation of insertion healing using hematoxylin and eosin (H&E) staining. Representative H&E images of BTI at 2, 4 and 8 weeks postoperatively for all groups. The area selected by the rectangle dashed line is the local magnified area. SB, subchondral bone; ST, supraspinatus tendon; Scale bars indicate 200 μm for the overall picture and 50 μm for the local magnified area.
