Statistical analysis of HLTF staining in a series of 4 groups of thyroid tumors. Ad: thyroid adenomas, PC: papillary carcinomas, FC: follicular carcinomas and AC: anaplastic carcinomas. The immunohistochemical expression was assessed quantitatively using the MOD (A), LI (B) and the percentage of positive nuclei (C). The threshold of significance associated with the global multigroup comparison (Kruskal-Wallis test) is located in the higher right corner. Horizontal arrows represent the post-hoc comparison for the pairs of groups with corresponding p-values.