PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9637264-4 1998 The performance of various methods was evaluated by testing a susceptible control strain and one with non-beta-lactamase-mediated ampicillin resistance 10 times in 16 laboratories. Ampicillin 130-140 beta-lactamase TEM-1 Haemophilus influenzae 106-120 9637264-9 1998 None of the 12 clinical isolates with non-beta-lactamase-mediated ampicillin resistance was detected as resistant in the participating laboratories. Ampicillin 66-76 beta-lactamase TEM-1 Haemophilus influenzae 42-56