<prompt> Composition of ZN stain are all EXCEPT?Basic fuschinAcid fuschinPhenolAlcohol  <response>: Ans. is b i.e., Acid fuschin Reagents required in Ziehl-Neelsen ZN stainingCarbol fuchsin - Strong Carbol fuchsin is basic fuchsin dissolved in phenol Carbolic acid.Acid alcohol or sulfuric acid.Methylene blue or malachite green. 