Fig. 2From: Extract from Astragalus membranaceus inhibit breast cancer cells proliferation via PI3K/AKT/mTOR signaling pathwayHPLC profile of AM extract. a HPLC chromatogram of mixed standard solutions, campanulin, ononin, calycosin, and formononetin. b HPLC chromatogram of AM extract. Campanulin, ononin, calycosin, and formononetin were detected in AM extract. The retention times were 22.245Â min (peak 1), 36.779Â min (peak 2), 42.79Â min (peak 3), and 52.748Â min (peak 4), respectivelyBack to article page