Colquhounia Root Tablet Protects Rat Pulmonary Microvascular Endothelial Cells against TNF--Induced Injury by Upregulating the Expression of Tight Junction Proteins Claudin-5 and ZO-1

Figure 1

HPLC analyses of the major active components of CRT: triptolide (a) and epicatechin (b) at the wavelengths of 220 nm and 280 nm, respectively.

(a)

(b)