Figure 5.DHC prevented TNF-α- induced degradation of type II collagen. Cells were stimulated with TNF-α (10 ng/ml) in the presence or absence of 10 and 20 μM for 24 h. The expression of type II collagen was measured by western blot analysis (****, P<0.0001 vs. vehicle group; $$, $$$$, P<0.01, 0.0001 vs. TNF-α treatment group).
