Tissue to be stained by the procedure demonstrated in the image should not be fixed in which fixative?

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Multiple Choice

Tissue to be stained by the procedure demonstrated in the image should not be fixed in which fixative?

Explanation:
The key idea is that the fixative must be chemically compatible with the staining method. Bouin’s fixative contains picric acid, which leaves a strong yellow background and can alter how stains interact with tissue. This can mask or modify staining, produce false colors, or affect the uptake of the stain, making the results unreliable for the demonstrated procedure. Other fixatives like formalin, ethanol, or glutaraldehyde don’t introduce that same background color or the same chemical interactions, so they are generally more compatible with many staining techniques. That’s why Bouin’s would be avoided for this particular stain.

The key idea is that the fixative must be chemically compatible with the staining method. Bouin’s fixative contains picric acid, which leaves a strong yellow background and can alter how stains interact with tissue. This can mask or modify staining, produce false colors, or affect the uptake of the stain, making the results unreliable for the demonstrated procedure. Other fixatives like formalin, ethanol, or glutaraldehyde don’t introduce that same background color or the same chemical interactions, so they are generally more compatible with many staining techniques. That’s why Bouin’s would be avoided for this particular stain.

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