Gained and lost metabolic activity in carbon sources utilization in the S. mutans ΔrpoE mutant compared to the wild type.

aWells were scored positive if the difference in the height of the metabolic curve was above the threshold value in one experiment and a similar result occurred in the second experiment, albeit sometimes below the threshold value.若单次实验中代谢曲线的高度差值高于阈值，且第二次实验可得到相似结果（即便第二次实验中的该差值有时低于阈值），则实验孔（Wells）将被判定为阳性。