منابع مشابه
Silver Impregnation for Electron Microscopy
Heavy metal impregnation of specimens for electron microscopy offers a means for differential "staining" of various tissue components and cellular constituents. Of many silver impregnation methods, one of the most useful is Gomori's silver methenamine (1) after periodic acid oxidation (PA-SM) (2, 3). Several authors have applied silver impregnation to electron microscopy (4-7), mainly for the d...
متن کاملSilver Impregnation Stain for Leptospira and Flagella.
Leptospires are difficult to stain with the usual bacterial stains; many different stains have been proposed, most of which are designed for staining of tissue sections. Silver stains that are available for smear preparations yield variable, unreliable results. Staining of bacterial flagella is often avoided because of difficulties involved. There exists a need for a simple technique which does...
متن کاملAcquired medullated nerve fibres.
Myelination of nerve fibres normally stops at the lamina cribrosa. When it does proceed beyond the lamina cribrosa, it is believed to do so shortly after birth. A patient is recorded in whom medullated nerve fibres developed in the retina during adult life.
متن کاملConduction in Nerve Fibres
Data by E. A. Blair and Erlanger on the voltage-capacity curves and the nerve impulse velocities of each of several fibres in the same nerve trunk are related to Rashevsky's equation for the velocity of transmission in nerve. The results lend support to Rashevsky's analysis. Other empirical relations between the velocity and the parameters of the excitation equations indicate the correctness of...
متن کاملMarking excision margins of surgical specimens by silver impregnation.
Marking excision margins of surgical specimens by silver impregnation has several advantages over commonly used Indian ink: during the slicing the tissue preserves its natural color, the staining is permanent, and the pigment does not smudge over cutting surfaces. The pigment is clearly visible in tissue sections. The tissue specimen is shortly dipped into a 10% water solution of argent nitrate...
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ژورنال
عنوان ژورنال: Nature
سال: 1953
ISSN: 0028-0836,1476-4687
DOI: 10.1038/171613a0