Gene 9430077C05Rik 6620402G01Rik + Skt genetic mapping http://identifiers.org/mgd/MGI:95454 MGI:95454 O enhancer trap locus 4 Etl4 E330027G05Rik Sickle tail Etl-4 Etl-4|9430077C05Rik|6620402G01Rik|E330027G05Rik|Skt|Sickle tail protein coding gene