highly significantp≈1.0x10 −74
We performed reduced representation bisulfite sequencing (RRBS), 5 a technology for interrogating hundreds of thousands of methylation sites with digital precision 27 , 28 on the rat PNS and found characteristic and highly significant patterns relating gene methylation and activity (p≈1.0x10 −74 ) that differed markedly between LCP and HCP genes.