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Comparison of total extractable C4H and PAL levels in various aerial parts of parsley plants. Protein blots on PVDF membranes (Millipore) after SDS-PAGE (10 μg of protein each, 10% polyacrylamide) were treated with C4H or PAL antiserum at a dilution of 1:1000. oF, Old flower; yF, young flower; Fb, flower bud; oL, old leaf; yL, young leaf; and Pe, pedicel.
