• 作者： 孫日星
• 作者服務機構： 高雄醫學院解剖學科
• 中文摘要： 本研究探討野外、倉庫小黃腹鼠睪丸 Leydig 細胞，於春冬兩季之微細構造。春冬兩季之小黃腹鼠睪丸相當大，而
  且有活躍的精子生成（spermatogenesis）。野外和倉庫小黃腹鼠之睪丸間質組織微細構造均相同。小黃腹鼠睪丸 Ley-
  dig細胞和其他動物之主要不同處，在於具有三種外型的豐富平滑內質網，即分叉管狀，扁平槽狀和泡狀。其內腔含
  有低電子密度的紮狀物質，這種紮狀物質也可在稍微擴大的核周池內發現，有時泡狀內質網會從核周池擴大處凸起形成
  。內質網的外膜有不等數目核糖體附著。管狀內質網和泡狀內質網，以及槽狀內質網之間有時可以發現相連。雖然春冬
  兩季小黃腹鼠睪丸 Leydig 細胞本質上相同，但冬季之泡狀內質網和核糖體數目均較春季少；槽狀內質網只在冬季發現
  ，某些部位有核糖體附著，有些則平滑；春季之管狀和泡狀內質網數量很多。
  少數膜狀胞器較內質網電子密度高。高基氏器很發達，有些槽和小泡內含有和內質網內腔類似的紮狀物質存在。線
  粒體具有管狀和板狀?和含有不等大小，數目顆粒之緻密基質。直徑7至10毫微米的絲，位於細胞內之其他胞器間。
  Leydig 細胞間發現有直線或彎曲隙聯合（gap junction）。
  d
• 英文摘要： The testes of yellow-bellied country-rat (Rattus losea Swinhoe) are well developed with activespermatogenesis in winter as well as in spring. The Leydig cells contain an abundant agranular endoplasmicreticulum (ER) in the forms of branched tubules, flattened cisternae, and vesicles, containing a flocculentmaterial in the lumen. Portions of the ER have a varying number of ribosomes attached to the membrane.Continuations of the tubules with the vesicles or the cisternae are observed. Although; the fine structure ofthe Leydig cells appears to be essentially the same in the animals captured in spring and in winter, lessnumerous vesicular elements of ER and fewer numbers of ribosomes are found in the cells of winter animalsthan the spring ones. Cisternal elements of ER are observed only in winter, being partly encrusted withribosomes and partly smooth surfaced. Tubular and vesicular elements of ER are numerous in springanimals. A few membrane-bounded bodies with a matrix of higher electron density than that of the ER areobserved. Golgi apparatus is well-developed. Flocculent material is found in some of the Golgi cisternae andvesicles. Mitochondria have tubular as well as lamellar cristae and a very dense matrix with granules varyingin size and number. Cytoplasmic filaments, about 7·10 run in diameter, are found. Gap junctions areobserved between Leydig cells.
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