Category: H
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Heterogeneity
The property of one or more samples or populations which implies that they are not identical in respect of some or all of their parameters, e. g. heterogeneity of variance. Dissimilarity in the genotypic structure of individuals originating through sexual reproduction. The quality of being heterogeneous.
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Heterodimers
Zippered pair of nonidentical proteins.
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Heterochromatin
The portion of chromosome material that remains condensed and is transcriptionally inactive during interphase. Chromatin staining differently and functioning differently than euchromatin which contains most of the genes. In Drosophila salivary preparations, the heterochromatin is mostly in the chromocenter. Chromosome material that stains most deeply when the cell is not dividing. It is thought not…
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Herpes zoster
Acute vesicular inflammation. Shingles. The infectious agent is the varicella zoster vims. Inflammation of a sensory nerve, characterised by pain along the nerve and causing a line of blisters to form on the skin, usually found mainly on the abdomen or back, or on the face. Painful raised lesions along nerve roots; also called shingles.…
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Heredity
The genetic transmission of a particular quality or trait from parent to offspring. The genetic constitution of an individual. Transfer of genetic information from parent cells to progeny. Refers to factors or traits passed from one generation to another through the genes. The process by which genetically controlled characteristics pass from parents to children. Process…
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Hereditary
Of, relating to, or denoting factors that can be transmitted genetically from one generation to another. Passed as from parents to children through the genes. To transmission from parents to offspring; inherited (e.g., hereditary disorder, a disorder that is passed from parents to offspring). Having to do with the transmission or characteristics, through the cellular…
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Hepatocytes
The main structural component of the liver. They are specialized epithelial cells that are organized into interconnected plates called lobules. A liver cell which synthesises and stores substances, and produces bile. Major functional cell of the liver; inflammation or injury to these cells results in hepatitis. The main cell type present in the liver. A…
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Hepatobiliary
Pertaining to the liver and the bile or the biliary ducts.
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Hemolysis
The destruction of erythrocytes by many different causal agents such as antibodies, bacteria, chemicals, temperature, and changes in tonicity. Rupturing of red blood cells with the resulting release of hemoglobin into the plasma. The destruction of red blood cells with the release of hemoglobin. The liberation of the hemoglobin from the erythrocytes. Medical term for…
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Hemoglobin
One of the fractions of glycosylated hemoglobin A1c. Glycosylated hemoglobin is formed when linkages of glucose and related monosaccharides bind to hemoglobin A and its concentration represents the average blood glucose level over the previous several weeks. HbA1c levels are used as a measure of long-term control of plasma glucose (normal, 4 to 6 percent).…