Fig. 4

(A − F) Immunostaining and quantitative analysis for LIF (A, B), TRAP (A, C), sclerostin (A, D), β-catenin (A, E) and osteocalcin (A, F) in sagittal sections of the subchondral bone medial compartment at 4 weeks and 8 weeks after ACLT surgery. Scale bar, 50 μm. Means ± SD; ^**p < 0.01 compared to the vehicle group at 0 weeks, ^##p < 0.01 compared to the vehicle group at 4 weeks