Figure 1: Representative immunohistochemical stainings for the expression of phosphorylated 4E-BP1 binding protein (p4E-BP1), phosphorylated mammalian target of rapamycin (p-mTOR), pAKt, pPTEN, pPIK3CA and TSC2 in gastric neuroendocrine tumors (original magnification, 200X), Left-negative staining, rightpositive staining. For pPIK3CA and pTSC2 only positive staining is shown