Positive Samples: HT-29, BxPC-3, Mouse brain, Rat brain Immunogen sequence: EMYIDLQGMK WAENWVLEPP GFLAYECVGT CRQPPEALAF KWPFLGPRQC IASETDSLPM IVSIKEGGRT RPQVVSLPNM RVQKCSCASD GALVPRRLQP. Left-right determination factor 1 and 2 (Lefty1/2) belong to the TG