VEGFR-2<-> Vegfr2<lacZ> flk-1- targeted mutation 1, Janet Rossant http://identifiers.org/mgd/MGI:1857168 Reporter|Null/knockout flk.lacZ Flk1-lacZ neo-in Flk1- Flk1lacZ Flk1<lacZ> flk-1/lacZ MGI:1857168 Kdr<tm1Jrt>