Specimens embedded in what type of material are floated on a warm water bath.

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Multiple Choice

Specimens embedded in what type of material are floated on a warm water bath.

Explanation:
Parafin wax is the embedding medium used for routine tissue sections. It melts and becomes pliable at warm temperatures, so when the cut sections are placed on a warm water bath they soften, relax any wrinkles, and float as a flat sheet. This makes it easy to pick them up onto slides for even mounting. Resin, while another embedding medium, remains hard and isn’t floated on warm water. Glycerin is a mounting medium used later, not for embedding or flotation. Agar can be used in some specialized techniques but isn’t the standard material for this step.

Parafin wax is the embedding medium used for routine tissue sections. It melts and becomes pliable at warm temperatures, so when the cut sections are placed on a warm water bath they soften, relax any wrinkles, and float as a flat sheet. This makes it easy to pick them up onto slides for even mounting. Resin, while another embedding medium, remains hard and isn’t floated on warm water. Glycerin is a mounting medium used later, not for embedding or flotation. Agar can be used in some specialized techniques but isn’t the standard material for this step.

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