micronucleus


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micronucleus

 [mi″kro-noo´kle-us]
1. in ciliate protozoa, the kinetoplast, the smaller of two types of nucleus in each cell, which functions in sexual reproduction.
2. a small nucleus.

mi·cro·nu·cle·us

(mī'krō-nū'klē-ŭs),
1. A small nucleus in a large cell, or the smaller nuclei in cells that have two or more such structures.
See also: macronucleus (2).
2. The smaller of the two nuclei in ciliates dividing mitotically and bearing specific inheritable material.
See also: macronucleus (2). Synonym(s): gametic nucleus, germ nucleus, gonad nucleus, karyogonad, reproductive nucleus

micronucleus

/mi·cro·nu·cle·us/ (-noo´kle-us)
1. in ciliate protozoa, the smaller of two types of nucleus in each cell, which functions in sexual reproduction; cf. macronucleus.
2. a small nucleus.

micronucleus

[-no̅o̅′klē·əs]
1 a small nucleus.
2 the smaller of two nuclei in some protozoa. It functions in sexual reproduction. Compare macronucleus.

mi·cro·nu·cle·us

(mī'krō-nū'klē-ŭs)
1. A small nucleus in a large cell, or the smaller nuclei in cells that have two or more such structures.
2. The smaller of the two nuclei in ciliates dividing mitotically and bearing specific inheritable material.
See also: macronucleus (2)

micronucleus

the smaller of two nuclei found in some protozoans which is concerned with cell division. Compare MACRONUCLEUS.

micronucleus

1. in ciliate protozoa, the kinetoplast, the smaller of two types of nucleus in each cell, which functions in sexual reproduction.
2. a small nucleus.
3. nucleolus.
References in periodicals archive ?
Among the different mutagenic biomarkers, the micronucleus (MN) assay is considered the most important reliable, rapid, easier and useful technique for routine biomonitoring programs, to evaluate the pollutant-induced stress syndrome and to assess the genotoxic potential of different environmental pollutants (Schipper et al.
The Human Micronucleus Project-an international collaborative study on the use of the micronucleus technique for measuring DNA damage in humans.
The micronucleus assay as a biological dosimeter of in vivo ionising radiation exposure.
The micronucleus test in pigs: induction of micronuclei in polychromatic erythrocytes by various doses of x-rays.
Cytokinesis-blok micronucleus assay in WIL2-NS cells: a sensitive system to detect chromosomal damage induced by reactive oxygen species and activated human neutrophils.
The aim of this study was to investigate the genotoxic potential of MMA vapor by simulating an occupational exposure standard of 8 hours per day and using the micronucleus test.
Comparison of two meiotic micronucleus techniques using cyclophosphamide.
The most probable cause of micronucleus formation is the irregular segregation of chromosomes during the meiotic process (PAGLIARINI et al.
Instead, they're marooned elsewhere within the cell and become wrapped in their own membrane, forming a micronucleus.
Micronucleus analysis: The lymphocytes were cultured according to the method of Fenech and Morley (13).