• cells
  • In addition to DNA found outside the nucleus in cells, infection of viral genomes also provides an example of extrachromosomal DNA. (wikipedia.org)
  • A statistically significant decrease in MDR 1 extrachromosomal gene copy number was reproducibly detected in the irradiated cells compared with unirradiated cells passaged for the duration of the experiment in the absence of radiation treatment. (aacrjournals.org)