Which of the following is an example of neutral stain?
Question and options
Which of the following is an example of neutral stain?
- Giemsa stain
- Congo red
- Malachite green
- Basic fuchsin
Answer and explanation
Correct answer: A - Giemsa stain
Giemsa is a neutral (compound) stain combining an acidic dye (eosin) with basic dyes (methylene blue/azure); Congo red, malachite green and basic fuchsin are single acidic or basic dyes.
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