diamond knife

A diamond knife is used to prepare an ultrathin section in ultramicrotomy. The diamond knife was originally developed to cut hard inorganic materials, which cannot be cut with a glass knife. Today, the diamond knife is used also for resin specimens because the glass knife is damaged even by a resin specimen, that is, the blade edge of the knife is likely to become dull. Thus, the diamond knife currently plays an essential role in preparing a uniform ultrathin section.

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