J. C. REVY, ISM / SCIENCE PHOTO LIBRARY J. C. REVY, ISM / SCIENCE PHOTO LIBRARY
Modified bacterial DNA. Coloured transmission electron micrograph (TEM) of genetic modification (red) to a plasmid of DNA. A plasmid is a length of DNA that can exist apart from the chromosome, and that can replicate on its own. Occurring both in bacteria and in yeast, these symbiotic pieces of DNA can be transferred from cell to cell and often act as vehicles for antibiotic resistance. In genetic engineering, modified plasmids are introduced into a bacterium to express the genetic information carried by the transplanted DNA. Magnification unknown. For this plasmid before modification, see image G110/710.
Model release not required. Property release not required.