Platycodon grandiflorum: From Phytochemical Diversity to Polysaccharides' Prominent Bioactivities and Edible-Medicinal Applications Provisionally accepted Mengnan Chen 1 Wenfeng Wei 2 Zhuang Wang 2 ...
50 µL plasma sample (or calibration standard or QC sample) was added with 25 µL IS working solution and 200 µL cold methanol. After vortexing for 3 min and centrifuging at 10000 rpm for 5 min, 100 µL ...