HemoHIM administration promotes immune responses for tumor surveillance in melanoma-bearing mice which were injected with cisplatin. All mice performed as described in figure 3 were sacrificed at 17 days after initial injection of cisplatin. (A)(B) The cancer cell killing activity of NK cells or Tc cells was determined by 51Cr release assay as described in Materials and Methods. (C)(D) Spleen lymphocytes were cultured with ConA (1 μg/ml). After 1 or 2 days, IL-2 and IFN-γ in culture supernatants were measured by ELISA as described in Materials and Methods. There were twenty one mice in each group. The spleens of three mice were pooled. Bars show the means ± SD of the septuple experiments. * p = 0.1, **p < 0.05 and ***p < 0.001 compared with only cisplatin treated group.