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在家兔腺垂体生长激素细胞和星形滤泡细胞浆内发现棒状微管样小体。此个体由一层连续的单位膜所覆盖,其内有大量的微管,微管依其直径的不同又可分为两类。关于它的确切功能和来源尚不清楚,根据本实验观察,推测它可能是一个机械动力装置,与细胞内亚微结构的区域性分布有关。在生长激素细胞核内发现微管和小管,还未见其它文献有过报道,生长激素细胞核内微管的直径约25～30urn.核内小管的直径约78nm,前者似乎与异染色质颗粒相连续,它可能是从异染色质向常染色质转变过程中的一个过渡形式,核内出现这些结构的确切意义还不清楚。
Coryneform microtubule-like bodies were found in the cytoplasm of pituitary ghrelin and star follicles in rabbit. This individual is covered by a layer of continuous unitary membrane, which has a large number of microtubules, microtubules according to their different diameters can be divided into two categories. Its exact function and source are not clear. According to the experimental observation, it is speculated that it may be a mechanical power unit, which is related to the regional distribution of intracellular submicrostructures. Microtubules and tubules have been found in the somatotrophic nuclei and no other literature has been reported, with microtubules in the nuclei of growth hormone nuclei about 25-30 nm in diameter, and nuclear tubules of about 78 nm in diameter, the former appearing to be continuous with heterochromatic particles , It may be a transitional form from heterochromatin to euchromatin, and the precise significance of these structures in the nucleus is unclear.