Transcriptional activity of Itga2 promoter-LUC reporter constructs transfected into Dami cells. The proximal 5′-regulatory region/promoter sequence (from –2058 to the ATG start codon at +113) of Itga2 haplotype 1 (from BALB/cJ) or haplotype 2 (from FVB/NJ) were cloned and assayed for transcriptional activity using a LUC reporter construct Relative luciferase activity is indicated on the abscissa. pGL2b is the LUC reporter vector without an Itga2 insert. Each entry represents the mean ± SD for 3 independent assays.