Fig. 2
From: Development of fibrocartilage layers in the anterior cruciate ligament insertion in rabbits
Representative histological sections of anterior cruciate ligament tibial insertions at each age stained with safranin O. The interfacial fibrocartilage layers (black arrows) were evaluated. Images for each rabbit age are shown: (a) 1 day (100×). (b) 1 week (40×). (c) 2 weeks (40×). (d) 4 weeks (40×). (e) 6 weeks (40×). (f) 8 weeks (40×). (g) 12 weeks (40×). (h) 24 weeks (40×). ACL, anterior cruciate ligament