1) Which of the following is used to stain cells of an onion peel?
O
Safranin
Methylene blue
O Glycerine
O Alcohol
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SAFRANIN
Safranin is a biological stain used in histology and cytology. Safranin is used as a counterstain in some staining protocols, colouring cell nuclei red. This is the classic counterstain in both Gram stains and endospore staining. It can also be used for the detection of cartilage, mucin and mast cell granules
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