tokens: As in the other three members whose gene expression is altered during tumorigenesis , PI12 expression was found to be down regulated in tumor brain tissues and in two brain cancer cell lines : U-87 MG and H4 .
folded_tokens: as in the other three member whose gene expression be alter during tumorigenesis , pi12 expression be find to be down regulate in tumor brain tissue and in two brain cancer cell line : u-87 mg and h4 .