Meanwhile, the plasma levels of substance P (SP) and vasoactive intestinal peptide (VIP) in 15 patients and 13 healthy subjects were measured using radioimmunoassay (RIA).

• 对15例银屑病患者与13名健康人血浆中P物质(SP)、血管活性肠肽(VIP)的含量进行放射免疫测定。