title: Antibiotic-induced surface changes in microorganisms demonstrated by scanning electron microscopy.
mesh_terms: D000667:Ampicillin / Q000494:pharmacology*; D002473:Cell Wall / Q000187:drug effects*; D008854:Microscopy, Electron; D013210:Staphylococcus / Q000187:drug effects*; D013297:Streptococcus pyogenes / Q000187:drug effects*
chemical_list: D000667:Ampicillin