In Vitro and In Vivo Biofilm Characterization of Methicillin-Resistant Staphylococcus aureus from Patients Associated with Pharyngitis Infection

Figure 2

Congo red agar test showing four different slime producing patterns of clinical MRSA isolates: (a) slime positive bacteria with dark shiny black colonies (upper sector); (b) black colonies (bottom sector); (c) weak black colonies (right sector); and (d) slime negative bacteria showing pink coloured colonies (left sector).