Label-fracture of cell surfaces by replica staining |
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Authors: | C A Forsman P Pinto da Silva |
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Affiliation: | Membrane Biology Section/Laboratory of Mathematical Biology, National Cancer Institute-Frederick Cancer Research Facility, Maryland 21701. |
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Abstract: | We introduce replica-staining label-fracture, a method for the cytochemical mapping of membrane surfaces. This method is a corollary of the rationale of label-fracture (Pinto da Silva and Kan, 1984: J Cell Biol 99:1156). After freeze-fracture the exoplasmic halves of the membrane remain attached to the replica. We show that cytochemical labeling of cell surfaces can be performed by direct post-fracture staining of freeze-fracture replicas. This new variant of label-fracture leads to miniaturization of labeling procedures and allows standardization of labeling conditions and simultaneous processing of different specimens. |
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