Nontuberculous mycobacteria
Nontuberculous mycobacteria ( NTM ) , also known as environmental mycobacteria , atypical mycobacteria and mycobacteria other than tuberculosis ( MOTT ) , are mycobacteria which do not cause tuberculosis or leprosy ( also known as Hansen's disease ) . 
<triplet> Nontuberculous mycobacteria <subj> mycobacteria <obj> subclass of