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(a) The endogenous gene (226 bp) of corn for ivr (left), (b) The exogenous gene (678 bp) of PTC for phyA2 (right). Arrows indicate the expected length of PCR products. M = marker; Lanes 1 = CC; lanes 2 = PTC; Lanes 3 = CC diet; lanes 4 = PTC diet; − = negative control (no DNA).
