The most common clinically important species found in this group include the M. avium complex (M. avium and M. intracellulare), M. kansasii, M. xenopi, M. simiae, M. szulgai, M. scrofulaceum, M. malmoense, M. terrae-nonchromogenicum complex, M. haemophilum, and M. genavense.
keener. 1  1 : having a fine edge or point : sharp a keen knife. 2  2 : having or showing mental sharpness a keen observation. 3  3 : very sensitive (as in seeing, smelling, or hearing) keen eyesight. 4  4 : full of enthusiasm : eager â¦ everybody was very keen to hear details of what had happened â¦ â J. K. Rowling, Goblet of Fire.
Definition of keen. 1  intransitive verb. 2  1a : to make a loud and long cry of sorrow : to lament with a keenb : to make a sound suggestive of a loud cry of sorrow a keening siren. 3  2 : to lament, mourn, or complain loudly.  transitive 1  verb. : to utter with a loud wailing voice or wordless cry keened our sorrow â Punch.