If we used 1.06 g/mL as the canonical mouse serum density, the mean IFN-γ concentration in serum at day 7 was about 1098.28 pg/g, while the mean IFN-γ concentration in tumor at day 7 was about 21,338.70 pg/g, so the tumor tissue had over 19-fold higher amounts of IFN-γ than blood at day 7 post injection (P = 0.0077). Here, IFNG is linked to neoplasm.