For example, the inner membrane of the motochaondrion is impermeable to the movement of protons. 例如，线粒体内膜对于质子转移是不透性的。
Children with certain heart defects are at risk for developing an infection of the inner surfaces of the heart known as bacterial endocarditis. 先天性心脏病患儿的心脏内表面有发生被称为心内膜炎的感染危险。
