Figure 2. Passage of B16 cell lines based on IFN/STAT1 pathway expression level coincides with an increase in number of lung colonies.

(A) Number of lung colonies per mouse after intravenous injection of 5×10⁴ tumor cells (horizontal line = mean number of lung colonies per mouse). (B) Representative images of lungs explanted from mice intravenously injected with 5×10⁴ P2^L, P2^H, or P3^H tumor cells, respectively.