S100A13 protein was mainly expressed in the cytoplasm of HCC cells, occasionally in the nucleus; the secondary bile canaliculi and some inflammatory cells also showed high S100A13 protein expression. S100A13蛋白主要表达于HCC细胞的胞质中,部分细胞核偶见表达,此外在癌旁次生胆小管中及部分炎细胞中也存在高表达。