Pdx1 IDX-1 pancreatic and duodenal homeobox 1 http://identifiers.org/mgd/MGI:102851 protein coding gene Mody4 STF-1|pdx-1|Ipf1|IDX-1|Mody4|IPF-1 pdx-1 O STF-1 + Ipf1 IPF-1 Gene MGI:102851 genetic mapping