Figure 2
![Figure 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1477-7827-8-79/MediaObjects/12958_2010_Article_704_Fig2_HTML.jpg)
Semi-quantitative RT-PCR expression of MMP and TIMP mRNA in the Siberian hamster estrous cycle. (A) MMP-2, (B) MMP-9, (C) MMP-14, (D) TIMP-1, (E) TIMP-2, and (F) β-actin used as a control gene for all RT-PCRs. Bar graphs represent mean ± SEM relative levels mRNA expression of MMP and TIMPs:β-actin mRNA expression. Groups with different letters are significantly different (p < 0.05)