Immunogen sequence: MAFDSTWKVD RSENYDKFME KMGVNIVKRK LAAHDNLKLT ITQEGNKFTV KESSTFRNIE VVFELGVTFN YNLADGTELR GTWSLEGNKL IGKFKRTDNG NELNTVREII GDELVQTYVY EGVEAKRIFK KD; Positive Samples: Mouse intestine, Rat intestine; Cellular Location: Cytoplasm. The FAB