Table 2 Correlation between mutations of the β-catenin gene, the location of β-catenin and the expression of GS. In the table all cases analysed by immunohistochemistry are listed. +GS: GS-positive;-GS: GS-negative; +M: with mutation;-M: without mutation; n.d.: Mutations were not determined due to lack of DNA; C: cytoplasmic, N: nuclear and M: normal membranous expression of β-catenin.