lacZ expression governed by altered Antp P2 promoter: Ubx and abd-A protected sequences at the following positions relative to the P2 promoter mutated by site directed mutagenesis: 1997, 1957, 1952, 1921, 1918, 990, 982, 958, 925, 912, 837, 744, 719, 636, 625, 555, 542, 452, 445, 422, 372, 359, 303, 297, 116.