Figure 2
From: Widespread pyocyanin over-production among isolates of a cystic fibrosis epidemic strain
Pyocyanin assays on LES isolates. Production of pyocyanin in culture supernatants during growth of LES isolates in L-broth is shown for all the LES isolates tested in this study. Each combination of colour and shape plotted represents a different LES isolate. The only non-LES isolate included is strain PA01 (blue squares, indicated by the arrow). LES isolates could be sub-divided on the basis of pyocyanin assays into various groups: (i) OP (early- and over-production of pyocyanin) [circles]. (ii) Intermediate [diamonds]. (iii) Normal or negative [squares]