Mounting medium
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A Mounting medium is a liquid, polymer, resin, etc, used to mount microscopical specimens before examination. Its optical attributes (refractive index, transparency) and physical/chemical properties (viscosity, stability, preservation of the specimen) are crucial. Mounting media for fluorescent microscopy often contain anti-fading agents to lengthen the life of fluorophores by quenching free radicals generated during illumination of the specimen.
