Used in medical liver biopsies - stains sulfhydrl groups and identifies:.Copper staining is a non-specific finding seen in many liver diseases it is associated with impaired bile secretion.Cardiovascular/lung (to see differentiate the layers of the arteries, and arteries from veins).ĮVG stain of a cerebral aneurysm.Considered better than the Masson trichrome stain.Should not be confused with Masson trichrome stain.Interpretation - as above in Masson's trichrome - plus: "Elastic trichrome" is one important variant of Masson's trichrome.
Should not be confused with the Mallory trichrome stain.Epithelial cell nuclei & stromal cell nuclei may stain red.Ĭystic medial degeneration - Movat stain - high mag.Many of the bacteria are quite small relative to lymphocytes Escherichia coli is 1-2 micrometers long x 0.25 micrometers in diameter.Red = Gram negative organisms, nuclei.Purple (or blue) = Gram positive organisms.Neisseria meningitidis, Moraxella catarrhalis Streptococcus pneumoniae, Staphylococcus aureus Mycobacterium tuberulosis, Legionella pneumophila they grows into a large (obviously visible) colony.Ī short list of bacteria and their characteristics: Shape\Gram stainĬlostridium difficile, Bacillus anthracis, Nocardia spp.Įscherichia coli, Helicobacter pylori, Yersinia pestis, Hemophilus influenzae They have one significant advantage - if a small amount of bugs are present.Microbiology is better at finding organisms than pathology."It is useless for finding bacteria.".Molecular testing, electron microscopy.Ĭongo red staining in cerebral amyloid angiopathy.Immunohistochemistry (dealt with in a separate article).Make sure one has exhausted the clinical history history is considered the best special stain.special) stains one should (in order) do the following: 4.27 Haematoxylin orcein phyloxin saffron stain.
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