The BAC transgenic vector used to make this allele was adapted from the vector used to create Tg(Nr4a1-EGFP/cre)820Khog. The original transgenic vector was made by introducing a cre recombinase/green fluorescent protein (GFP) fusion cassette to the 5'end of the full-length Nr4a1 gene encoded by bacterial artificial chromosome (BAC) clone RP24-366J14. In this allele, the EGFP/cre fusion was replaced with turboRFP. (J:282187)