Figure 4
From: Detection of hydrogen cyanide from oral anaerobes by cavity ring down spectroscopy
Correlation between HCN and CO2 concentrations of P. gingivalis ATCC 33277 and W50.
Data points (▪) represent the concentration of HCN (horizontal axis) and CO2 (vertical axis) determined from one plate at a certain time point. Since each strain was measured in duplicate and at 24, 48 and 72 hours, each strain has six data points. In total, there are 12 data points for two reference strains, P. gingivalis ATCC 33277 and W50. A strong correlation (rs = 0.89 and p < 0.001) was observed by Spearman’s rank correlation test.
