THE PATTERN OF MICROTUBULES DURING SPERMATOGENESIS: A COMPARATIVE IMMUNOHISTOCHEMICAL STUDY ON THE DISTRIBUTION OF TUBULIN

抄録

During spermatogenesis, a great number of microtubules temporarily appear around the nucleus of the spermatid at the time the nucleus undergoes transfiguration. Therefore, the transfiguration of the nucleus is considered to be closely related to the distribution of the microtubules.
In this paper, the distribution pattern of microtubules in the spermatid of the rodent, which has an asymmetrical fishhook-shaped nucleus, was compared with that of microtubules in the spermatid of the dog, which has the symmetrical ovoid nucleus.
The results indicate that the microtubules in rodents were localized only on the concave side of the nucleus, while those in the dog spermatid were distributed evenly on the posterior half of the nucleus.