Bouin's fixative contains picric acid as a component. Which option lists Bouin's as such?

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Multiple Choice

Bouin's fixative contains picric acid as a component. Which option lists Bouin's as such?

Explanation:
Bouin's fixative is a rapid, harsh mixture that includes picric acid along with formaldehyde and acetic acid. The presence of picric acid is what characterizes Bouin's and gives it strong fixation with good nuclear detail, though it makes the solution yellow and requires careful handling due to picric acid’s explosive risk when dry. Among common fixatives, only Bouin's contains picric acid; formalin is just formaldehyde in buffer, osmium tetroxide is used mainly for electron microscopy and lipid preservation, and alcohol fixes tissues by dehydration and coagulation without picric acid.

Bouin's fixative is a rapid, harsh mixture that includes picric acid along with formaldehyde and acetic acid. The presence of picric acid is what characterizes Bouin's and gives it strong fixation with good nuclear detail, though it makes the solution yellow and requires careful handling due to picric acid’s explosive risk when dry. Among common fixatives, only Bouin's contains picric acid; formalin is just formaldehyde in buffer, osmium tetroxide is used mainly for electron microscopy and lipid preservation, and alcohol fixes tissues by dehydration and coagulation without picric acid.

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