Methods The plasma levels of ET, CGRP and NPY of patients with cerebral infarction (CI) and cerebral hemorrhage (CH) were detected with radioimmunoassay (RIA), and normal controls also.

• 方法用放射免疫法测定脑梗死和脑出血患者血浆ET、NPY、CGRP水平变化，并与对照组进行比较。