Immunogen sequence: MMKPRPKRFI AKPCALCIGI EDSGPYQAQP NAILEKVFIS ITKYPDKKRL EGLSKQLDWN VRKIQCWFRH RRNQDKPPTL TKFCESMWRF TFYLCIFCYG. The LASS (longevity assurance homolog) family members represent a subgroup of the homeobox gene family and are highly conse