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A, Northern blot showing expression of CAW471 in mRNA extracted from flower AZ and NZ tissue that had been exposed to ethylene (10 μL L−1) for 0, 12, 24, and 48 h. The same membrane was probed with a 25S rRNA to show equal loading of the RNA. B, Time course of abscission in flower AZ explants exposed to ethylene (10 μL L−1) for 0, 6, 12, 18, 24, 30, and 30 h.
