This study examines the development and reversal of beta-lactam resistance in Staphylococcus aureus through in vitro serial exposure to antibiotics. Resistant isolates showed a significant increase in
Identification of beta-lactamases-encoding-genes in phenotypically resistant Escherichia coli isolated from young diarrheic or necropsied calves in Belgium.
We hypothesize that when the experienced stress is maintained over many generations, a bacterial population acquires adaptive mutations regardless of the mode of growth, which are localized in genetic