Heidelberg [Germany], August 21 (ANI): Researchers from the German Cancer Research Center (Deutsches Krebsforschungszentrum, DKFZ) and the Hebrew University in Jerusalem have discovered the cell of origin of mixed liver/biliary duct carcinomas, a rare type of liver cancer, in mice. Interleukin 6 is a pro-inflammatory immunological messenger that has been linked to cancer development (IL-6). The amount and size of tumours were reduced in mice after IL-6 was blocked.