Histologic examinations of mice 6 weeks after intravenous inoculation of 164T2 (right panel) and 267T2 (left panel) lymphoma cells. Representative sections of kidneys and liver of mice injected with both lymphoma cells are shown. In mice injected with 164T2 cells, massive lymphoma cell infiltration was observed in perivascular stroma of liver sections, whereas in kidneys, massive infiltration was observed in the renal cortex. These results are representative of more than 50 histologic examinations.