TABLE 1.

Detection of PIA and hexosamine in crude extracts of S. epidermidis 1457 and biofilm-negative transposon mutant 1457-M11a

Strain and mediumBiofilm formation (OD570)Hexosamine concn (μg/ml)bPIA titer
1457
    TA + Glc2.509.881:64
    TA − Glc0.060Negative
1457-M11
    TA + Glc0.020Negative
    TA − Glc0.050Negative
  • a Both strains were grown in TA in the presence or absence of glucose.

  • b Limit of detection, 1.3 μg/ml.