Immunogen sequence: SSLPFSVEAL MSDKKPPKEA SPLPAESASA GATLRPLLLS GHGAREAHSP GPLVKPFETA SVKSENSEDG AAWMQEPGRY SPPPRHTSPT TCTLRKHKTN RKP. Msx2 is a transcriptional repressor whose normal activity may establish a balance between survival and apoptosis of neu