P438: ARYL HYDROCARBON RECEPTOR SIGNALLING IN NORMAL HAEMATOPOIETIC (HSC) AND LEUKEMIA STEM CELLS (LSC): DIFFERENTIAL EFFECT OF AHR ANTAGONIST ON LSC COMPARED TO HSC. (23rd June 2022) - Oryshchuk, A.; Desai, R.; Kakadiya, P.; Bohlander, S.