highly significantp=3.69e −3
As per Figure 2 , difference in mean proportion ranging 0.0-0.1% included highly significant penicllin and cephalosporin biosynthesis (p=3.69e −3 ) and significant-sulphur relay system (p=0.01), ascorbate and aldarate metabolism (0.02), polyaromatic hydrocarbon degradation (p=0.04), andpropanoate metabolism (p=0.04).