Aerosol otSolution—An Effective Softener of Herbarium Specimens for Anatomical Study

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Abstract
Dried plant parts are cut into convenient sizes and soaked in a solution containing 2.5–3.3% Aerosol OT in distilled water for 5 or more hours until well penetrated by the Aerosol. After brief washing in distilled water the material can be embedded, can be sectioned freehand or, if the nature of the material permits, with a sliding microtome, without embedding. Although it is a good wetting agent, Aerosol is chemically neutral; therefore, microchemical tests can be performed successfully on material treated with it. Refractory plant tissues embedded in paraffin can be successfully softened if one face of the block is trimmed to expose the tissue, then soaked in an Aerosol solution before sectioning.

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