Gallagher B C
Am J Anat. 1980 Dec;159(4):475-84. doi: 10.1002/aja.1001590410.
A primary cilium is a normal component of every rabbit corneal endothelial cell, rather than being a rare or sporadic organelle, as previously believed. In common with other cilia of this type it possesses an axonemal organization of 9 +0 which converts distally to 8 + 1; it occurs only one per cell; and the basal body is accompanied by a proximal centriole. Additional structures associated with the basal body are nine transitional fibers, four striated satellite arms, and several rootlets. Ladderlike structures extend between the two centrioles to form the wall of a barrel. Reexamination of primary cilia from other tissues indicates that the ultrastructure of endothelial cilia may be characteristic of primary cilia in general.
初级纤毛是每只兔角膜内皮细胞的正常组成部分，而不是如之前所认为的那样是一种罕见或散在的细胞器。与其他此类纤毛一样，它具有9 + 0的轴丝结构，在远端转变为8 + 1；每个细胞仅出现一根；基体伴有一个近端中心粒。与基体相关的其他结构有九条过渡纤维、四条横纹卫星臂和几条小根。梯状结构在两个中心粒之间延伸，形成桶壁。对来自其他组织的初级纤毛的重新检查表明，内皮纤毛的超微结构可能总体上是初级纤毛的特征。
