| ppm | <abbreviation> Parts per million. (05 Mar 2000) |
|---|---|
| PPM-1 beta-lactamase | <enzyme> From a cefuroxime-resistant strain of proteus mirabilis Registry number: EC 3.5.2.- Synonym: beta-lactamase fpm-1, fujisawa proteus mirabilis oxyiminocephalosporinase (26 Jun 1999) |