Which chemical is the most commonly used as a fixative for pathological specimens?
A. Picric acid
B. Mercuric chloride
Correct answer : D. Formaldehyde
- Fixation is the process by which the morphological features of tissues are preserved
- All of the above chemicals can be used a fixatives for pathological specimens
- But formalin (solution of formaldehyde in water) is the most commonly used fixative
- Formaldehyde is a colourless gas at room temperature with a pungent smell