title: Induction of stable L-forms of Salmonella typhi and Listeria monocytogenes.
abstract: Stable L-forms of Salmonella typhi and Listeria monocytogenes were produced using penicillin (4500 units/ml) as inducer, and sucrose, normal horse serum and Mg++ as stabilizers. Stable L-forms were produced after 100 and 56 passages, then adapted to grow and multiply in a medium free of inducer and stabilizers so that they did not revert to parental forms even after 12 continuous passages.
mesh_terms: D007740:L Forms / Q000166:cytology*; D008089:Listeria monocytogenes / Q000166:cytology* / Q000187:drug effects / Q000254:growth & development; D008274:Magnesium / Q000494:pharmacology; D010406:Penicillins / Q000494:pharmacology; D012485:Salmonella typhi / Q000166:cytology* / Q000187:drug effects / Q000254:growth & development; D013395:Sucrose / Q000494:pharmacology
chemical_list: D010406:Penicillins; D013395:Sucrose; D008274:Magnesium