作者: A. Katayama , E. Ishikawa , T. Ando , T. Arai
DOI: 10.1016/0003-9969(78)90115-2
关键词: Plasmid 、 Biology 、 Plasmid dna 、 Isolation (microbiology) 、 Streptococcus mutans 、 Muramidase 、 Enzyme 、 Microbiology 、 Molecular size
摘要: Abstract Small plasmids, of molecular weight 3 Mdal, which are present as a multi-copy state in all naturally-occurring mucoid strains and the established standard Streptococcus mutans , were detected by use Strep. specific muramidase, mutanolysin. The this enzyme has enabled constant detection plasmid from with high reliability, confirming findings cariogenic plasmids their uniform size tested.