Multiple choice

Mycobacterium tuberculosis is a rod shaped ____colored bacillus?

  1. red

  2. pink

  3. blue

  4. none of the above

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mycobacterium tuberculosis is an acid-fast bacillus. When stained using the Ziehl-Neelsen technique, it appears bright pink or red against a blue background.