O B3gnt1 beta-1,4-glucuronyltransferase 1 BETA3GNT1 iGNT http://identifiers.org/mgd/MGI:1919680 protein coding gene genetic mapping 1500032M01Rik B4gat1 Gene B3gnt6 BETA3GNT1|B3gnt6|iGNT|1500032M01Rik|B3gnt1 MGI:1919680 +