Figure 2From: Expression of matrix metalloproteinases (MMPs) in primary human breast cancer and breast cancer cell lines: New findings and review of the literature Boxplot analysis of densitometrically quantified expression of MMP mRNA. The expression level of each gene was normalized to the corresponding expression of PBGD. For each MMP three boxes are mapped: expression in normal breast tissue (white box), in grade 2 tumors (G2) (light grey box) and in grade 3 tumors (G3) (dark grey box). Black line within the box represents the median, boxes show the quartiles and bars indicate the minimum and maximum value.Back to article page