title: [Isolation of thymidine-dependent strains. Microbiologic considerations and personal observations].
abstract: We describe the emergence of three thymidine-dependent strains (Thy-): two Escherichia coli obtained in successive occasions from urine of a woman treated with co-trimoxazole before the organisms were isolated and one Proteus mirabilis obtained from urine of a man who had a treatment with norfloxacin. Cultural characteristics and methods for the detection of these Thy- strains are given.
mesh_terms: D000368:Aged; D004926:Escherichia coli / Q000302:isolation & purification / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011513:Proteus mirabilis / Q000302:isolation & purification / Q000378:metabolism*; D013936:Thymidine / Q000172:deficiency*
chemical_list: D013936:Thymidine
vernacular_title: Isolamento di ceppi timidino-dipendenti. Considerazioni microbiologiche ed osservazioni personali.