Which metal forms a chelation complex with carmine in Mayer mucicarmine staining?

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Multiple Choice

Which metal forms a chelation complex with carmine in Mayer mucicarmine staining?

Explanation:
In this staining method, a metal mordant is needed for the dye to bind mucin by forming a chelated complex. Aluminum serves as the mordant in Mayer mucicarmine, forming an aluminum-carmine complex that specifically binds acidic mucopolysaccharides in mucin. This interaction yields the distinctive magenta staining of mucin. The other metals listed aren’t used as mordants in this technique, so they wouldn’t produce the same mucin stain.

In this staining method, a metal mordant is needed for the dye to bind mucin by forming a chelated complex. Aluminum serves as the mordant in Mayer mucicarmine, forming an aluminum-carmine complex that specifically binds acidic mucopolysaccharides in mucin. This interaction yields the distinctive magenta staining of mucin. The other metals listed aren’t used as mordants in this technique, so they wouldn’t produce the same mucin stain.

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