抄録
Microtubules in the guinea pig vestibular epithelia were examined with TEM. Sensory cells contained solitary microtubules consisting of 13 protofilaments. Microtubules occurred numerously in type I hair cells, meanwhile only sparsely in type II cells. Supporting cells were characterized by some cytoskeletal bundles, which were composed of 2 to 30 microtubules. Microtubules here were also composed of 13 subunits. They were associated with actin filaments via a few number of filamentous structures.