View/Open - ARAN - National University of Ireland, Galway

Appendix 2
Colour index
High outlier
Low outlier
Large Difference in OD
Appendix 2 - Table 1: displays the optical density biofilm formed in 3
replicate wells for each for 6 Salmonella enterica subspecies enterica
serovar Agona strains, 6 Salmonella Typhimurium strains and 2 Salmonella
Enteritidis strains examined. The optical density was measured at 590
wavelengths (OD 590 ). The measurement of OD 590 was repeated on the
same plate twice to examine the repeatability of measurement of OD 590
values. Each strain was examined in triplicate wells in the microtitre plate.
The high outliers are denoted by yellow coloured cell and the low outliers
are denoted by blue coloured cell. The difference between the repeated
reads was calculated by subtracting the 1 st read from the 2 nd read of OD 590.
A large difference in the reads is denoted by a pink coloured cell. The mean
of all 6 observations for each strain was also calculated. These mean
calculations are based on the biofilm density formed over 48 hours at 22°C.
Page 255