title: Continuous-culture studies of interactions among human skin-commensal bacteria.
abstract: Chemostat studies were made of an antibiotic-producing Staphylococcus epidermidis strain (S6+), a similar, but antibiotic non-producing S. epidermidis strain (S6-), and a sensitive indicator strain of Micrococcus sp. (M7). Pure and mixed continous cultures were investigated at low population levels (in 0-1% peptone water) and at higher levels (in 0-5% peptone water). Strain S6+ antagonised the growth of strain M7 when its colony count was maintained above 10(7-0) per ml, while strain S6- remained unaffected.
mesh_terms: D000900:Anti-Bacterial Agents / Q000096:biosynthesis; D001431:Bacteriological Techniques; D006801:Humans; D012867:Skin / Q000382:microbiology*; D013210:Staphylococcus / Q000145:classification / Q000378:metabolism*
chemical_list: D000900:Anti-Bacterial Agents