Reporter constructs used in the transgenic assays. Three different LacZ reporter constructs, and one GFP construct, were prepared to study the IS promoter mediated transcriptional activity of the mGATA-2 gene. The open boxes represent the LacZ orGFP gene and closed boxes represent mGATA-2 gene exons. Abbreviations for the restriction enzyme sites are E, EcoRI; K,KpnI; S, SalI; Xb, XbaI; Xh, XhoI.