Stage

Mean ± s.d.

Active MMP-1 expression level in Initial Stage (n = 13)

0.11 ± 0.02

Active MMP-1 expression level in Advance Stage (n = 15)

0.34 ± 0.04

Pro MMP-1 expression level in Initial Stage (n = 13)

0.12 ± 0.06

Pro MMP-1 expression level in Advance Stage (n = 15)

0.29 ± 0.07