A rapid method of following the spontaneous regression of experimental leukemias

Summary Transplantation of virus and chemically induced leukemias from C3H/He-mgxAKR/F₁ hybrid mice into C3H/He-mg males induced leukemias in the latter, which was followed by a spontaneous regression of the disease within a few days. The regression of leukemia could easily be followed by measuring the changes in the pyruvate kinase activity of para-aortic lymph node cells.