Which of the following is a non-additive fixative?

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Multiple Choice

Which of the following is a non-additive fixative?

Explanation:
Non-additive fixatives fix tissue mainly by dehydration and protein coagulation without introducing persistent chemical additives into the tissue. Alcohol achieves fixation by removing water and causing proteins to precipitate, so it doesn’t leave cross-links or metal residues behind. The other agents listed work by adding or forming chemical bonds or incorporating metals into the tissue (cross-linking proteins or binding metals), which classifies them as additive fixatives. So alcohol is the non-additive option.

Non-additive fixatives fix tissue mainly by dehydration and protein coagulation without introducing persistent chemical additives into the tissue. Alcohol achieves fixation by removing water and causing proteins to precipitate, so it doesn’t leave cross-links or metal residues behind. The other agents listed work by adding or forming chemical bonds or incorporating metals into the tissue (cross-linking proteins or binding metals), which classifies them as additive fixatives. So alcohol is the non-additive option.

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