Immunogen sequence: GPAGPAGAEA AKQCSPCSAA AQSSSGPAAL PYGYFGSGYY PCARMGPHPN AIKSCAQPAS AAAAAAFADK YMDTAGPAAE EFSSRAKEFA FYHQGYAAGP YHHHQPMPGY LDMPVVPGLG GPGESRHEPL GLPMESYQPW ALPNGWNGQM YCPKEQAQPP HLWKSTLPDV VSHPSDASSY R. HoxA13 and HoxD13 also bind to ot