As expected, the pro-tumor IL-10 level was significantly lower in the serum of animals from the ‘EVs-Hsp70’ group than in serum of mice from the ‘Untreated’ groups (3.6 ± 0.2 vs 25.5 ± 0.6 pg/mL, p = 0.000001 for B16 and 4.8 ± 0.2 vs 18.4 ± 1.6 pg/mL for CT-26, p = 0.0001). The gene discussed is HSPA1A; the disease is neoplasm.