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Methods in Microbiology

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Multiple Choice

Which of the following are used as counterstain in Gram staining technique?
P. Crystal violet
Q. Safranin
R. Iodine solution
S. Carbol fuchsin
Select the correct answer.

  1. P and Q
  2. P and R
  3. Q and R
  4. Q and S
  5. R and S
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