| [antimicrobial susceptibility and beta-lactamase productivity of recent clinical isolates during the period between december 1999 and february 2000]. | antimicrobial susceptibility testings of 24 antimicrobial agents against 605 clinical strains belonging to 10 species were carried out according to the micro-broth dilution method of nccls m7-a4. the productivity of beta-lactamase was also determined against them isolated at 8 medical facilities in nagano prefecture, japan during the period between december 1999 and february 2000. when applied the nitrocefin method, beta-lactamase productivity was demonstrated to be positive for 89.2% of 74 s. a ... | 2002 | 12599534 |