Embedding plant tissue with plastic using high pressure: a new method for light and electron microscopy.
STAIN TECHNOLOGY(2009)
摘要
An embedding technique has been developed to overcome difficulties that confront light and electron microscopists working with so-called "hard-to-embed" plant tissue. The method was originally described for freeze-dried material. It uses a modified Quickfit Rotaflo Valve and low heat to generate high pressure to aid in the infiltration and embedding of tissue with propylene oxide and plastic. The technique is not too cumbersome and requires 6 days from the dehydration step to the end of the polymerization process. Thick sections (1-2 micrometer) obtained from material prepared by this method stain readily with toluidine blue, and thin sections for the electron microscope stain satisfactorily following standard treatment with uranyl acetate and lead citrate. The thin sections are stable under the beam of the electron microscope. Results indicate that the quality of tissue preservation with this high pressure embedding technique is as good as tht observed using standard embedding methods for electron microscopy.
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关键词
high pressure,electron microscopy
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