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Representative images of animal surgery and patch implantation. (a) Anterior longitudinal incision of the scrotum to separate the retractor penis muscle; (b) 3 cm incision was made on the ventral side of the urethra; (c) continuous suturing of the urethral defects and a nonabsorbable thread marked the injury position; (d) the ADM or ADM modified with CBD-VEGF patch was placed over the wound.
