Figure 6.

Relative quantification of GPNMB expression in the pool of all stomach cancer cell lines and tissues depends on different combinations of reference genes. The GPNMB expression in stomach cancer cell lines and stomach tissues (solid bar: Normal, open bar: Tumor) were normalized by two combinations derived from geNorm and NormFinder (mean ± SD); normalized by 18S rRNA-ACTB in stomach cancer cell lines (A) and stomach tissues (C) and normalized by 18S rRNA-B2M in stomach cancer cell line (B) and stomach tissues (D).