PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12435677-9 2002 The index of surviving bacteria showed the existence of mixed concentration- and time-dependent actions of amoxicillin (in the presence of clavulanate) which varied as a function of the magnitude of beta-lactamase production by the test strains. Amoxicillin 107-118 beta-lactamase Escherichia coli 199-213