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Ciwujianoside A1 was detected in plasma and the cerebral cortex after oral administration of the leaf extract of E. senticosus. A structure of ciwujianoside A1 and LC-MS charts of plasma (A) and cerebral cortex (B) from vehicle-treated and leaf extract-treated mice 6 h administration of the extract. Red arrows indicate a peak ciwujianoside A1. A blue value means intensities of the peak.
