The RMCE cassette in the TI{CRIMIC.TG4.1}TaceCR02267-TG4.1 insertion has has been replaced with a 'Double Header' (DH) trapping cassette (contains two independent trapping modules oriented in opposite directions). The cassette is in 'protein-trap' orientation relative to Tace, which is predicted to results in the Tace coding sequence being tagged with a multi-tag cassette that includes EGFP.