The transgenic construct contains CMV-IE enhancer/chicken beta-actin/rabbit beta-globin hybrid promoter, the EGFP-654 (an enhanced green fluorescent protein cDNA coding sequence interrupted at nucleotide [nt] 105 by a 850 nt human beta-globin intron 2 sequence with mutated nt654 [IVS2-654]) and a bovine globin polyadenylation signal. (J:222542)