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PCR identification of cTGFBR2 intragenic duplication. (A) Schematic locations of PCR primers used for the identification of cTGFBR2 intragenic duplication. (B) Genomic PCR identification of the intragenic duplication of cTGFBR2 in various chicken breeds. M, marker; Control, water as the negative control; Lanes 1 and 2, Northeast Agricultural University F2 Resource Line; Lanes 3 and 4, Lindian chicken breed; Lanes 5 and 6, NEAUHLF; Lanes 7 and 8, AA broiler chicken.
