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(A) Representative H&E-stained images (left and right sides) of P21 Twist1+/− coronal sutures with EV treatments showing fused sutures, denoted by arrowheads. (B) Representative H&E-stained images (left and right sides) of P21 Twist1+/− coronal sutures with PEG-peptide plasmid miR-200a treatments showing open unfused sutures. The dashed lines separate the bone from the suture cells, and the arrowheads show fused bone.
