Slow-speed freezing of chemically unfixed biological tissues and long-term storage of frozen samples for cryoscanning electron microscopy.

Abstract

We describe a procedure in which plant tissue as well as a yeast culture on agar are frozen with slow cooling rates for observation of surface structures in a cryoscanning electron microscope. A system is also presented for long-term storage of frozen specimens under liquid nitrogen, in which the material is maintained for direct observation. Some small… (More)

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