title: Haemophilus influenzae, ampicillin sensitivity, and inoculum size.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology*; D006193:Haemophilus influenzae / Q000187:drug effects*; D008826:Microbial Sensitivity Tests / Q000379:methods*
chemical_list: D000667:Ampicillin