Figure 1From: Phosphodiesterase inhibition mediates matrix metalloproteinase activity and the level of collagen degradation fragments in a liver fibrosis ex vivo rat modelSerum levels of C3M in CCl 4 and Vehicle rats at baseline compared to termination after 8 weeks of treatment. Number of rats used (N): Vehicle N = 5, CCl4 N = 11. Asterisks **p < 0.01.Back to article page