SSTR5 and meningioma: Meningioma samples were classified into the following two groups according to their SST1 or SST5 mRNA expression level: (1) low SST1 or low SST5 mRNA expression (namely, LSST1 or LSST5 group, respectively, < 0.1 copy/β-Gus copy) and (2) high SST1 or high SST5 mRNA expression (namely, HSST1 or HSST5 group, respectively, ≥ 0.1 copy/β-Gus copy).