Organ-specific expression of the GmEXP1 and GmEXP2 genes in soybean. Each lane contains 10 μg of total RNA extracted from leaves, stems, hypocotyls, and roots of 20-d-old soybean seedlings grown in the Hoagland solution. For comparison of both the GmEXP1 and GmEXP2 genes, the membrane was stripped and reprobed with the other probe. The bottom panel shows the ethidium bromide (EtBr)-stained 25S rRNA in the gel, indicating that an equal amount of RNA was loaded in each lane.