Microscopic examination
The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.
Gram Staining
Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.
Liver contain lipid droplets, which secrete extra cellular matrix proteins.
*The activation of stellate cells from vitamin A storing cells to proliferate is the main event in liver injury
* A hepatocyte is a cell of the liver, which make up 80% of liver mass. Functions of these cells involved in:
*Protein synthesis
*Protein storage
*carbohydrate transformation
* Cholesterol, bile salts and phospholipids synthesis
*Detoxification
* Formation and secretion of bile.
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