Abstract
The effect of oxidation on neurofibrillar argyrophilia was studied by subjecting nervous tissues containing both normal and degenerating fibers to the action of potassium permanganate, periodic acid, chromic acid, lead tetraacetate, and sodium bismuthate prior to silver impregnation. The argyrophilic response of normal fibers to such treatment was studied with the Nonidez silver nitrate block technic, the double impregnation method of Bielschowsky on both blocks and sections, and a silver proteinate procedure. The response of degenerating fibers was studied by the Cajal formula 6 block technic and the modified Bielschowsky procedure of Nauta and Ryan for sections. The experimental data indicated that such oxidation did not produce any differential staining effects between normal or degenerating fibers.
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