Immunogen sequence: LPSPNDSKFF QNLLDEEDLE DMMDAEEYLV PQAFNIPPPI YTSRARIDSN RNQFVYRDGG FAAEQGVSVP YRAPTSTIPE APVAQGATAE IFDDSCCNGT LRK. Oncogene ERBB4 (HER4) is a member of the type I receptor protein tyrosine subfamily that includes EGFR, ERBB2, and ERBB