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Number of DE genes between the comparison libraries. TC: Tongcheng, YK: Yorkshire. Before birth: 30, 40, 55, 63, 70, 90, and 105 days post-coitus. After birth: 0, 1, 3, and 5 weeks post-natum. A: Tongcheng pigs, B: Yorkshire pigs, C: the identical period comparison between TC and YK pigs.
