%0 Journal Article %A Marsh, P. D. %A Selwyn, S. %T Continuous-Culture Studies of Interactions Among Human Skin-Commensal Bacteria %D 1977 %J Journal of Medical Microbiology, %V 10 %N 2 %P 261-265 %@ 1473-5644 %R https://doi.org/10.1099/00222615-10-2-261 %I Microbiology Society, %X SUMMARY 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 continuous 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 107.0 per ml, while strain S6− remained unaffected. %U https://www.microbiologyresearch.org/content/journal/jmm/10.1099/00222615-10-2-261