title: [Electron microscopic studies on morphological changes of Chlamydia psittaci induced by a small dose of penicillin (author's transl)].
mesh_terms: D002689:Chlamydia / Q000187:drug effects / Q000648:ultrastructure*; D010400:Penicillin G / Q000494:pharmacology*
chemical_list: D010400:Penicillin G