Fig. 2. Photomicrographs showing representative longitudinal sections of the quadriceps tendon (QT) (A, D), the patellar tendon (PT) (B, E), and the semitendinosus tendon (ST) (C, F). The micro-architecture of the three tendons were closely identical with the fascicles arranged in parallel and end-to-end in the longitudinal plane along the length of the tendons. In the H&E staining (A–C) (×63 objective lens), the blue-stained fibroblasts appeared spindle or flat in shape and were uniformly distributed in all the tendons. In the MT staining (D–F) (×10 objective lens), collagen appeared green-stained and appeared to be widely distributed in the fascicles.
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