P477: COMBINATION OF DIFFERENT IMMUNOTHERAPEUTIC DRUGS ENHANCES SPECIFIC T CELL IMMUNE RESPONSES AGAINST LEUKEMIC CELLS AND LEUKEMIC PROGENITOR/STEM CELLS IN ACUTE MYELOID LEUKEMIA - Jochen Greiner; Patrick Schuler; Hubert Schrezenmeier; Susanne Hofmann; Marlies Götz (HemaSphere, 2023)