development of IAA was considered most likely on account of oxidase deamination of NMT (Barker et al., 1980), but was later established to get also in part by direct deamination by MAO (Barker et al., 1982). https://stevefwso504155.tinyblogging.com/the-smart-trick-of-dmt-that-no-one-is-discussing-72497259