Intravenous administration of polyethylene glycol-modified tumor necrosis factor-α completely regressed the solid tumor in the Meth-A murine sarcoma model - Tsutsumi, Y; Kihira, T; Tsunoda, S; Kubo, K; Miyake, M; Kanamori, T; Nakagawa, S; Mayumi, T (Jpn J Cancer Res, 1994)