ROBO1 and ROBO4 expression discriminate between different stage and differentiation groups of liver tissues. Expression values of SLIT-ROBO genes were compared using one-way ANOVA in liver tissue samples that are stratified according to their stages and differentiation status and represented as boxplots. (A) ROBO1 significantly differentiates one staging group from the others (p = 0.018). (B) The expression of ROBO1 also discriminates between different differentiation status of liver tissues (p = 0.031). (C) ROBO4 also significantly separates one differentiation group among all (p = 0.039).