Which of the following special stains is best suited for detecting acidic mucopolysaccharides (glycosaminoglycans) in cartilage or mucinous tissue?
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Correct answer: Alcian blue stain
Alcian blue binds strongly to acidic polysaccharides such as glycosaminoglycans or mucopolysaccharides, rendering them bluish, and is commonly used to highlight cartilage matrix or mucin-rich tissues.
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