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  1a : intellectually alert : having or characteristic of a quick penetrating mind a keen student a keen awareness of the problem; also : shrewdly astute a keen assessmentb : extremely sensitive in perception keen eyes a keen sense of smellc : sharply contested keen competition keen debate.