PGKCre MGI:2178049 syntenic Tg(Pgk1-cre)1Lni http://identifiers.org/mgd/MGI:2178049 transgene insertion 1, Peter Lonai Cre<mat> Transgene O transgene PGK-Cre|Cre<mat>|PGK-Cre<m>|PGKCre PGK-Cre<m> PGK-Cre