Okado N, Yokota N
Anat Rec. 1982 Jan;202(1):117-24. doi: 10.1002/ar.1092020114.
Axoglial synaptoid contacts as well as junctional specializations were examined in the neural lobe of five human fetuses ranging from 7.5 to 19 weeks of ovulation age. Because synapselike contacts (SLC), which have both presynaptic and postsynaptic densities, were observed only in the younger fetus (7.5 weeks), they may be transient structures. Axoglial SLC were also found in older fetuses, but their structural characteristics were different from those found in a 7.5-week fetus in that the cytoplasmic membrane density was found only on the presynaptic side and its extent was decreased. In the youngest fetus observed here (7.5 weeks), puncta adherentia were observed. In the fetuses older than 11 weeks, gap junctions, long adherentia-type junctions with thick filamentous structures, and mixed junctions with both types of contact were found between pituicytes.
在5例排卵年龄为7.5至19周的人类胎儿的神经叶中，研究了轴突胶质突触样接触以及连接特化。由于仅在较年轻的胎儿（7.5周）中观察到具有突触前和突触后密度的突触样接触（SLC），因此它们可能是短暂结构。在较年长的胎儿中也发现了轴突胶质SLC，但其结构特征与7.5周胎儿中发现的不同，因为细胞质膜密度仅在突触前侧发现且其范围减小。在此观察到的最年轻胎儿（7.5周）中，观察到了粘着斑。在11周以上的胎儿中，在垂体细胞之间发现了缝隙连接、具有粗丝状结构的长粘着型连接以及两种接触类型的混合连接。
