Histopathology of the one-day treated leukemic mice. Mice of the one-day treated leukemic group were sacrificed at different time points post therapy for histopathological analysis. Tissues were gained right after sacrifice, fixed in 10% formalin overnight, stained by hematoxylin-eosin (H&E) and examined by an inverted microscopy. (A) Status of leukemic infiltration and normal hematopoiesis in spleen post chemotherapy. (B) Status of leukemic infiltration and normal hematopoiesis in bone marrow post therapy.