Fig. 1.
Quantification of biofilms on peg lids by safranin staining. Biofilm formation on peg lids quantified by safranin staining of the wild-type S. epidermidis 1585, or strains with induced PIA production ( S. epidermidis 1585pTXicaADBC), induced Embp production ( S. epidermidis 1585Pxyl/tetembp), or deficiency of both PIA and Embp production ( S. epidermidis 1585Δembp). Strains were grown in (a) laboratory media (TSB or BHI) or (b) BHI containing 10 or 50 % (v/v) human plasma (HP) (*P<0.05, Welch’s t-test). (c) Phase-contrast microscopy of suspended aggregates formed by the S. epidermidis 1585 strains in BHI containing 50 % (v/v) human plasma.