[Isolation of a mutant of Streptococcus lactis resistant to penicillin].
D000818:Animals; D001431:Bacteriological Techniques; D002417:Cattle; D013294:Lactococcus lactis / Q000254:growth & development / Q000302:isolation & purification*; D008892:Milk / Q000382:microbiology*; D010403:Penicillin Resistance
Aislamiento de una mutante de Streptococcus lactis resistente a penicilina.