Immunogen sequence: QDRVDFGQTE PHTVLFHEPG SSSVWVGGRG KVYLFDFPEG KNASVRTVNI GSTKGSCLDK RDCENYITLL ERRSEGLLAC GTNARHPSCW NLVNGTVVPL GEMRGYAPFS PDENSLVLFE GD. CD108 (Sema7A) is a GPI-anchored semaphorin family member, which enhances central and peripheral a