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What is simple staining?
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What type of stain is the Gram stain, and what does it rely on for meaningful results? A. It is a simple stain that relies on chemical differences in the plasma membrane to yield meaningful results.
In vivo vs In vitro. In vivo staining (also called vital staining or intravital staining) is the process of dyeing living tissues. By causing certain cells or structures to take on contrasting colours, their form (morphology) or position within a cell or tissue can be readily seen and studied.
Jul 7, 2022 · Staining is widely used in histopathology and diagnosis, as it allows for the identification of abnormalities in cell count and structure under the microscope. A huge range of stains is used in histology, from dyes and metals to labeled antibodies.
Gram-positive bacteria are colored purple by the Gram stain because they have: a layer of glycoprotein called peptidoglycan on the outside of the cell wall. Conjugation is a process in which: a bacterium transfers a copy of some or all of its DNA to another bacterium.
Jun 25, 2015 · The process of histological staining takes five key stages which involve; fixation, processing, embedding, sectioning and staining (Titford, 2009).
- Hani A Alturkistani, Faris M Tashkandi, Zuhair M Mohammedsaleh
- 2015
May 1, 2023 · Four basic types of human tissue can be stained and viewed using various histological techniques. Epithelium, connective tissue, muscle tissue, and nervous tissue have commonalities but look very distinct structurally after staining. Each stain exists to highlight an important feature or component within a tissue type.
Aug 4, 2015 · When human cells are stained, the crystal violet dye washes out and the counterstain clings to the nucleus of the cell. The colors then stain the layer of peptidoglycan if a cell wall is present. Peptidoglycan is a polymer located within the cell walls of bacteria.
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