Figure 1. Distribution of the total β-lactamase occurrences by molecular class and by biotic relationships for bacterial species. Class stands for the Ambler classification of β-lactamases

From

Biotic Relationships: Distribution of Antibiotic Resistance Genes in Nosocomial Pathogens

Tejpreet Chadha

American Journal of Microbiological Research. 2014, 2(4), 118-121 doi:10.12691/ajmr-2-4-3