1.14.12.18 biphenyl degradation - - PWY5F9-12 1.14.12.18 Dioxin degradation - 00621 - 1.14.12.18 diphenyl ethers degradation - - PWY-7747 1.14.12.18 Metabolic pathways - 01100 - 1.14.12.18 Microbial metabolism in diverse environments - 01120 -