Isolation of L-forms reverting to Staphylococcus aureus from pus of patients with staphylococcal infections: a study on 31 cases of staphylococcal infections treated with antibiotics.

Abstract The results of regularly performed cultures with the aim of isolating L-forms from pus from 31 patients treated with antibiotics for staphylococcal infections are presented. In 3 cases growth of L-forms of Staphylococcus aureus was obtained on penicillin-free media. These patients had not been treated with cell wall affecting antibiotics for 2 weeks or more prior to the isolation of Informs.