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Hematocrit levels in DBA/2J (A) and CD1 (B) mice injected with 3 or 50 μg of pCMV/EPO with (+ES) or without (−ES) electrical stimulation. Data are the mean ± SD of hematocrit measured in four animals. (C) Serum EPO levels. ∗, Significantly different from 50 μg −ES; #, significantly different from 50 μg +ES.
