apoptosis
n. programmed cell death, natural process in which a cell disintegrates after reaching a certain age or due to poor cell health | ||||
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Apoptosis definition was found in categories: Language, Idioms & Slang(1) Medicine(5) Science & Technology(3) Encyclopedia(1)
Apoptosis Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
apoptosis
Noun
1. a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival
(synonym) programmed cell death, caspase-mediated cell death
(hypernym) necrobiosis, cell death
Noun
1. a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival
(synonym) programmed cell death, caspase-mediated cell death
(hypernym) necrobiosis, cell death
Apoptosis Definition from Medicine Dictionaries & Glossaries
| NCI Dictionary of Cancer Terms |
apoptosis
[AY-pup-TOE-siss]
A type of cell death in which a series of molecular steps in a cell leads to its death. This is the body's normal way of getting rid of unneeded or abnormal cells. The process of apoptosis may be blocked in cancer cells. Also called programmed cell death.
[AY-pup-TOE-siss]
A type of cell death in which a series of molecular steps in a cell leads to its death. This is the body's normal way of getting rid of unneeded or abnormal cells. The process of apoptosis may be blocked in cancer cells. Also called programmed cell death.
| Aids Glossary |
apoptosis
programmed cell death. Apoptosis is the body's mechanism for eliminating undesirable or excessive immune system activity, e.g., immune cells that attack the body's own tissues. Abnormal apoptosis is often seen in HIV disease.
programmed cell death. Apoptosis is the body's mechanism for eliminating undesirable or excessive immune system activity, e.g., immune cells that attack the body's own tissues. Abnormal apoptosis is often seen in HIV disease.
| Hepatitis Central (TM) Liver Disease Medical Glossary |
Apoptosis
Developmental or programmed cell death characterized by membrane blobs, extensive chromatin condensation, and DNA fragmentation. Plays a role in negative selection of developing T cells and the killing of targets by cytotoxic T lymphocytes. Cell suicide
Developmental or programmed cell death characterized by membrane blobs, extensive chromatin condensation, and DNA fragmentation. Plays a role in negative selection of developing T cells and the killing of targets by cytotoxic T lymphocytes. Cell suicide
| Glossary of HIV/AIDS-Related Terms |
APOPTOSIS
"Cellular suicide," also known as programmed cell death. HIV may induce apoptosis in both infected and uninfected immune system cells. Normally when CD4+ T cells<!-- (see) --> mature in the thymus gland<!-- (see) -->, a small proportion of these cells are unable to distinguish self from nonself. Because these cells would otherwise attack the body's own tissues, they receive a biochemical signal from other cells that results in apoptosis. See Tumor Necrosis Factor.
"Cellular suicide," also known as programmed cell death. HIV may induce apoptosis in both infected and uninfected immune system cells. Normally when CD4+ T cells<!-- (see) --> mature in the thymus gland<!-- (see) -->, a small proportion of these cells are unable to distinguish self from nonself. Because these cells would otherwise attack the body's own tissues, they receive a biochemical signal from other cells that results in apoptosis. See Tumor Necrosis Factor.
| HIV Vaccine Glossary |
apoptosis
cellular suicide, also known as programmed cell death. A possible mechanism used by HIV to suppress the immune system. HIV may cause apoptosis in both HIV-infected and HIV-uninfected immune system cells.
cellular suicide, also known as programmed cell death. A possible mechanism used by HIV to suppress the immune system. HIV may cause apoptosis in both HIV-infected and HIV-uninfected immune system cells.
Apoptosis Definition from Science & Technology Dictionaries & Glossaries
| BioProcess International™ Glossary |
apoptosis
describes the molecular and morphological changes that characterize controlled cellular self-destruction, often called "programmed cell death".
describes the molecular and morphological changes that characterize controlled cellular self-destruction, often called "programmed cell death".
| Glossary of Genetic Terms |
apoptosis
defined: Programmed cell death, the body's normal method of disposing of damaged, unwanted, or unneeded cells.
explained: Listen to a detailed explanation.
Dr. Jennifer Puck, of the National Human Genome Research Institute's Genetics and Molecular Biology Branch, defines apoptosis.
related terms: cell
defined: Programmed cell death, the body's normal method of disposing of damaged, unwanted, or unneeded cells.
explained: Listen to a detailed explanation.
Dr. Jennifer Puck, of the National Human Genome Research Institute's Genetics and Molecular Biology Branch, defines apoptosis.
related terms: cell
| Common Terms in Evolutionary Biology and Genetics |
Apoptosis
The genetically programmed death of cells at specific times during embryogenesis, metamorphosis, and during cell turnover in adults.
The genetically programmed death of cells at specific times during embryogenesis, metamorphosis, and during cell turnover in adults.
Apoptosis Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Apoptosis
Apoptosis (pronounced ă-pŏp-tŏ’sĭs, apo tō' sis) is a form of programmed cell death in multicellular organisms. It is one of the main types of programmed cell death (PCD), and involves an orchestrated series of biochemical events leading to a characteristic cell morphology and death. It involves an orchestrated series of biochemical events which lead to a variety of morphological changes, including blebbing, changes to the cell membrane such as loss of membrane asymmetry and attachment, cell shrinkage, nuclear fragmentation, chromatin condensation and chromosomal DNA fragmentation (1-4). The apoptotic process is executed in such a way as to safely dispose of cellular debris.
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