- Enhanced antitumor activity of 5-fluorouracil in combination with 2'-deoxyinosine in human colorectal cell lines and human colon tumor xenografts. Ciccolini, J., Peillard, L., Evrard, A., Cuq, P., Aubert, C., Pelegrin, A., Formento, P., Milano, G., Catalin, J. Clin. Cancer Res. (2000)