Immunogen sequence: RVLELYSGVG GMHHALRESC IPAQVVAAID VNTVANEVYK YNFPHTQLLA KTIEGITLEE FDRLSFDMIL MSPPCQPFTR IGRQGDMTDS RT Highest antigen sequence identity to the following orthologs: Mouse - 87%, Rat - 86%. CpG methylation is an epigenetic modification