English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

A beta-lactamase-negative, ampicillin-resistant strain of Haemophilus influenzae is currently used for quality control of broth microdilution tests performed with Haemophilus test medium (HTM). Studies with eight lots of HTM broth documented the fact that MIC limits for some antimicrobial agents are unrealistically stringent; i.e., only three of eight lots of HTM broth were satisfactory for testing cefaclor. An alternative, ampicillin-susceptible strain of H. influenzae (ATCC 49766) was found to provide much more reproducible results with five problematic drugs (cefaclor, cefuroxime, cefamandole, loracarbef, and cefonicid). Multilaboratory studies defined MIC control limits for both control strains tested against 12 antimicrobial agents.

journal of clinical microbiology

Haemophilus influenzae ATCC 49766, an alternative quality control strain for monitoring broth microdilution susceptibility tests with selected beta-lactams