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(a) (b) The semiquantitative RNA expression of OPN. C1–C4 indicated four different cloned pigs. The black arrows represent the contrary expression in the cloned pig tissues relative to WT tissues. Br: brain, Ea: ear, He: heart, Ki: kidney, Li: liver, Lu: lung, Mu: muscle, Sk: skin, In: intestine, Sp: spleen, Pl: placenta, Um: umbilical cord, B: blood; S: blood treated with SssI, and W: ddH2O.
