Endogenous Peroxidase Staining
نویسنده
چکیده
The present study was set up to formulate a generally applicable schedule for the cellular demonstration of tumour index substances using routinely prepared histological material by a method which would also be reproducible and readable and allow simultaneous histological diagnosis. The carcinoembryonic antigen (Gold and Freedman, 1965) was used as the prime subject as high-quality reagents were available.
منابع مشابه
The Fine Structural Localization of Endogenous and Exogenous Peroxidase Activity in Kupffer Cells of Rat Liver
Endogenous peroxidase activity has been demonstrated in sections of rat liver fixed briefly by glutaraldehyde perfusion and incubated in Graham and Karnovsky's medium for cytochemical demonstration of peroxidase activity (29). In 25-40% of sinusoidal cells, an electron-opaque reaction product is localized in segments of the endoplasmic reticulum, including the perinuclear cisternae, a few Golgi...
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Biotinylated compounds are commonly used to label neuronal cell bodies via intracellular filling or retrograde tracing. Endogenous concentrations of biotin within a subset of neuronal cell bodies would pose a problem for interpreting such experiments. Here I report that a subset of turtle spinal cord neuronal cell bodies strongly stains for biotin, using the avidin-biotin-horseradish peroxidase...
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Biotin-avidin systems can be used as an alternative to indirect antibody sandwich methods in the detection of T lymphocyte subsets in cryostat sections of human lymphoid tissue. Appreciable endogenous avidin binding activity (EABA) has been found, however, in human lymph nodes and tonsils. Such EABA can be a source of false positive staining when biotin-avidin detection systems are used to iden...
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Prominent staining of rat hepatic microbodies was obtained by incubating sections of aldehyde-fixed rat liver in a modified Graham and Karnovsky's medium for ultrastructural demonstration of peroxidase activity. The electron-opaque reaction product was deposited uniformly over the matrix of the microbodies. The microbodies were identified by their size, shape, presence of tubular nucleoids, and...
متن کاملPseudo-immunolabelling with the avidin-biotin-peroxidase complex (ABC) due to the presence of endogenous biotin in retinal Müller cells of goldfish and salamander.
Immunodetection techniques are dependent on enzyme-protein conjugates for the visualisation of antigen-antibody complexes. One of the most widely used is the avidin-biotin-peroxidase complex (ABC) method. The present study demonstrates that direct treatment of goldfish and salamander retinal sections with ABC, followed by an incubation with the chromogenic substrate 3,3-diaminobenzidine tetrahy...
متن کاملDifferential Dendritic Shrinkage of and Retinal Ganglion Cells in Cats with Chronic Glaucoma
METHODS. Chronic elevation of intraocular pressure (IOP) was produced by injecting endogenous ghost red blood cells into the unilateral anterior chamber of the feline eyes for 1 month. The morphologic features of retrograde-labeled RGCs by bilateral injection of horseradish peroxidase (HRP) into layers A and Aa1 of the lateral geniculate nucleus (LGN) were examined and compared between the norm...
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