Clone (cell biology) - Wikipedia
WEBA clone is a group of identical cells that share a common ancestry, meaning they are derived from the same cell. [1] Clonality implies the state of a cell or a substance being derived from one source or the other. Thus there are terms like polyclonal —derived from many clones; oligoclonal [2] —derived from a few clones; and monoclonal ...
Clonal Definition & Meaning - Merriam-Webster
WEB: the aggregate of genetically identical cells or organisms asexually produced by or from a single progenitor cell or organism. b. : an individual grown from a single somatic cell or cell nucleus and genetically identical to it. c. : a group of replicas of all or part of a macromolecule and especially DNA.
Clonal evolution in cancer | Nature
WEBJan 18, 2012 · Abstract. Cancers evolve by a reiterative process of clonal expansion, genetic diversification and clonal selection within the adaptive landscapes of tissue ecosystems. The dynamics are...
Clonal selection (video) | Khan Academy
WEBClonal selection is a process by which the body produces B and T cells to respond to infections. These cells each have unique receptors that allow them to identify specific pathogens. When the body encounters an infection, the B and T cells that can recognize the invader multiply rapidly to create an army of cells to fight it.
Cloning - Wikipedia
WEBCloning is the process of producing individual organisms with identical genomes, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction; this reproduction of an organism by itself without a mate is known as parthenogenesis.
Clonal selection - Wikipedia
WEBIn immunology, clonal selection theory explains the functions of cells of the immune system ( lymphocytes) in response to specific antigens invading the body. The concept was introduced by Australian doctor Frank Macfarlane Burnet in 1957, in an attempt to explain the great diversity of antibodies formed during initiation of the immune response.
13.1E: Clonal Selection and Clonal Expansion - Biology LibreTexts
WEBAug 31, 2023 · When an antigen encounters the immune system, its epitopes eventually will react only with B-lymphocytes with B-cell receptors on their surface that more or less fit and this activates those B-lymphocytes. This process is known as clonal selection (Figure \(\PageIndex{2}\)). Figure \(\PageIndex{2}\): Clonal Selection, Step-2.
Clonal hematopoiesis in human aging and disease - PMC
WEBNov 1, 2019 · Clonal hematopoiesis provides a glimpse into the process of mutation and selection that likely occurs in all somatic tissues. Go to: Introduction. Aging is associated with a steady increase in the number of somatic mutations in virtually all tissues 1 – 5. These age-associated mutations fall into several classes.
Clonality - an overview | ScienceDirect Topics
WEBAbstract. Clonality is widespread in the living world. It is probably the oldest reproductive mode, though recombination may be as old. In this chapter the authors focus first on precise definitions of clonal reproduction and sexual recombination.
11.7C: Clonal Selection of Antibody-Producing Cells
WEBDec 24, 2022 · Key Terms. clonal selection: An hypothesis which states that an individual lymphocyte (specifically, a B cell) expresses receptors specific to the distinct antigen, determined before the antibody ever encounters the antigen. Binding of Ag to a cell activates the cell, causing a proliferation of clone daughter cells.
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