What does MN stand for?

A number of in vitro mammalian cell-based genotoxicity assays have been developed, including test methods for identifying micronuclei and mutations of marker genes (Bonassi et al.

The researchers looked at three standard indicators of chromosomal damage: structural chromosomal aberrations (breaks in chromosomes), micronuclei (small nuclei consisting of chromosome fragments produced by breakage or whole chromosomes lost from the main nucleus after the cell divides), and sister chromatid exchanges (exchanges of genetic material between a pair of identical chromosomes).

Rochester, NY) has patented a method for the enumeration of mammalian cell micronuclei, while distinguishing micronuclei from the chromatin of dead and dying cells.

These studies identified the micronuclei in human blood, for example, associated with cell phone near-field radiation.

did not induce any chromosomal aberration in bone marrow cells of mice; there were no significant differences observed in sister chromatid exchange and micronuclei formation tests at the same dose levels.

In apoptosis, the micronuclei formed from the disrupted DNA repair are released into nutrient-rich interstitial fluid where they are free to clone and proliferate--argued by many to be a probable cancer mechanism.

Nuclear abnormalities in erythrocytes, as micronuclei and nuclear buds (BE), are considered potential biomarkers of genotoxic exposure.

Exercise-induced DNA effects in human leukocytes are not accompanied by increased formation of 8-hydroxy-2'-deoxyguanosine or induction of micronuclei.