TOMM20 and anaplastic cancer: The papillary cancer cells are claimed to reveal a higher expression of TOMM20 (translocase of outer mitochondrial membrane, a marker of mitochondrial mas) than the non-cancerous tissue, while the stromal tissue in advanced papillary and anaplastic cancer is claimed to overexpress the monocarboxylate transporter 4 (MCT4), a membrane-bound protein being a transporter mediating the outputting lactate from fibroblasts33.