Figure 2
From: Aging is associated with increased activities of matrix metalloproteinase-2 and -9 in tenocytes
Quantitative real-time PCR revealed: (A) No significant differences among three age groups in the levels of the mRNA that encodes type-I collagen; (B)(C) The level of the mRNA that encodes MMP-2 and MMP-9 increased with age (* p < 0.001, n = 3); (D)(E) The level of the mRNA that encodes TIMP-1 and TIMP-2 decreased with age (* p < 0.001, n = 3); (F) No significant differences among three age groups in the level of the mRNA that encodes TGF-β1.