Fig. 1
From: Development of fibrocartilage layers in the anterior cruciate ligament insertion in rabbits
Stained histological sections. a PCNA staining (400×). PCNA-positive chondrocytes are brown (arrows). b TUNEL staining (400×). TUNEL-positive chondrocytes are brown (arrows). Sox9 staining (400×). c Sox9-positive chondrocytes are brown (arrows). PCNA, proliferating cell nuclear antigen; TUNEL: terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate-biotin nick-end labeling; Sox9: sex-determining region Y box 9