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The amount of mesenchymal stem cells (MSCs) in the lung and liver at 1, 4, 24, 72 and 168 hours after MSC injection using real-time polymerase chain reaction for human Alu sequence. (A) Calibration curves for human Alu sequence to evaluate the amount of MSCs in some organs. The amount of MSC in the lung and liver (B, C) from MSC-injected mice or control mice were calculated based on panel (A).
