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We report on a procedure for tissue preparation that combines thoroughly controlled physical and chemical treatments: quick-freezing and freeze-drying followed by fixation with OsO4 vapors and embedding by direct resin infiltration. Specimens of frog cutaneous pectoris muscle thus prepared were analyzed for total calcium using electron spectroscopic(More)
Synaptophysin, an integral protein of the synaptic vesicle membrane, and synapsin I, a phosphoprotein associated with the cytoplasmic side of synaptic vesicles, represent useful markers that allow to follow the movements of the vesicle membrane during recycling. The use of antibodies against these proteins to label nerve terminals during experimental(More)
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