MTAP and leukemia: In the Supplementary Fig. 18a, b, no MTA peaks were detected from the conditioned media of MTAP-WT macrophages (RAW-264.7 and MV-4-11) incubated with exogenous MTA compared to media from a control plate (DMEM) or conditioned media from MTAP-deleted leukemia cells (CCRF-CEM) under the same experimental condition.