“…Some of the clinically relevant clades include the Mycobacterium tuberculosis complex (M bovis, M tuberculosis, and M microti, among others), the M avium complex (M avium, M intracellulare, and M lepraemurium, among others), and the M leprae complex. [3][4][5] The M leprae complex is a small clade of fastidious, slowly growing, Mycobacterium species that includes M haemophilum as well as M leprae and M lepromatosis, the agents of human leprosy, and M uberis, found in ruminants. 6,7 Mycobacterium leprae, M lepromatosis, and M uberis have not been cultured axenically, and M haemophilum has an iron uptake deficiency that prevents it from growing on standard mycobacterial media, in addition to growing more optimally at 30-32°C than at 37°C.…”