Original: M. tuberculosis, then known as the tubercle bacillus, was first described on 24 March 1882 by Robert Koch, who subsequently received the Nobel Prize in physiology or medicine for this discovery in 1905; the bacterium is also known as Koch's bacillus.
Simplified: M. tuberculosis then known as the "tubercle bacillus," was first described on March 24, 1882 by Robert Koch, the bacterium is also known as Koch's bacillus.