目的以动物药残留毛的显微特征为依据，对中药蝉蜕及其易混淆品进行鉴别。
当头发角质层开始破坏，内部纤维暴露的时候，头发就会变得干燥。
1·Hair furcation because the surface layer (or periostracum) of hair stem has been already damaged.
头发分叉是因为毛干的表层(或角质层)已经损坏。
2·When the hair periostracum starts breakage, internal at the time that fiber exposed, the hair would become dry.
当头发角质层开始破坏，内部纤维暴露的时候，头发就会变得干燥。