Objective To study the expression of endothelin-1 (ET-1),calitonin gene-related peptide (CGRP) in lung tissue and explore its relationship with the neonatal diffuse pulmonary hemorrhage (DPH).

• 目的 探讨肺组织中内皮素 1(ET 1)、降钙素基因相关肽 (CGRP)的表达及其与新生儿弥漫性肺出血的关系。