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The typical hepatocyte is cubical with sides of 20-30 μm, (in comparison, a human hair has a diameter of 17 to 180 μm). [1] The typical volume of a hepatocyte is 3.4 x 10 −9 cm 3 . [ 2 ] Smooth endoplasmic reticulum is abundant in hepatocytes, in contrast to most other cell types.
Liver cytology is the branch of cytology that studies the liver cells and its functions. The liver is a vital organ, in charge of almost all the body’s metabolism. Main liver cells are hepatocytes, Kupffer cells, and hepatic stellate cells; each one with a specific function.
In histology (microscopic anatomy), the lobules of liver, or hepatic lobules, are small divisions of the liver defined at the microscopic scale. The hepatic lobule is a building block of the liver tissue, consisting of portal triads, hepatocytes arranged in linear cords between a capillary network, and a central vein.
Hepatic stellate cells (HSC), also known as perisinusoidal cells or Ito cells (earlier lipocytes or fat-storing cells), are pericytes found in the perisinusoidal space of the liver, also known as the space of Disse (a small area between the sinusoids and hepatocytes).
(Lipopolysaccharide (LPS) is a bacterial endotoxin which is found in the cell wall gram-negative bacteria, whereas lipoteichoic acid is present in gram-positive bacteria.) Because of this detection system, Kupffer cells play a critical role in initiating and mediating immune responses to bacterial infection of the liver.
HepaRG cell line is a human hepatic in vitro line used in liver biology research and for assessing liver pathology, hepatotoxicity, and drug-induced injury. The HepaRG model is considered a surrogate for Primary Human Hepatocytes, which are the most pertinent model to reproduce the human liver functioning as they express 99% of the same genes .
Several efforts have been made to make a list or a map of all human cells. [18] [19] [20] One of the largest and most recent is the HuBMAP (Human BioMolecular Atlas Program). [21] The HuBMAP project has organized 1551 different samples in 17 collections, each dedicated to a different system.
Viral hepatitis is liver inflammation due to a viral infection. [1] [2] It may present in acute form as a recent infection with relatively rapid onset, or in chronic form, typically progressing from a long-lasting asymptomatic condition up to a decompensated hepatic disease and hepatocellular carcinoma (HCC).