| − | Recombinant means of or resulting from new combinations of genetic material or cells; the genetic material produced when segments of DNA from different sources are joined to produce recombinant DNA. | + | Recombinant means of or resulting from new combinations of genetic material or cells; the genetic material produced when segments of DNA from different sources are joined to produce recombinant DNA.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#r</ref> |