“…The sizes of all three introns (6, 3.5, and 8.9 kb) are larger than those of human (1.9, 1.1, 1.2, and 1 kb) and mouse (2.1, 0.8, 1, and 1 kb) BMP4 genes. Similar to its mammalian counterparts, the zebrafish BMP4 gene also contains a TATA-less promoter (Feng et al, 1995;van den Wijngaard et al, 1996).…”