Specificity of the vaccination in a lung metastasis tumor model. Two groups of BALB/c mice (n = 7) were injected i.v. with 106 RLZ-HKGag cells and immunized with 107 IU/mouse MVA-HKcon or MVA i.m. on day 10 and 17. The animals were sacrificed on day 33, lungs were removed, and stained with X-Gal. The number of tumor nodules was counted on the surface of the lungs. Data for each mouse are shown. The p-value of 0.0313 shows significance.