Detection of the Content of Two Coumarins, IM and ISOIM, and Their Mechanism of Action on Colitis Rats in Angelica albicans

Figure 2

(a–c) PRM chromatogram of the analytes and plasma internal standard (IS).

(a) Plasma blank

(b) Spiked blank plasma in LLOQ

(c) Plasma sample after oral administration of Angelica albicans