The inner plexiform layer was appeared during 13th week.

第13周节细胞与内成神经细胞之间出现内网层；

Only the outer plexiform layer cells of group B3. were swollen.

B3组有少量外丛状层细胞轻度肿胀。

RESULTS Neurofibroma normally grows in two ways: along nerve cord and in plexiform.

结果神经纤维瘤常见沿神经干生长及丛状生长二种类型。

Conclusion The cords could be divided into three types which were longitudinal, horizontal and plexiform cords.

结论右心房的条索分为纵向、横向和丛状三类。

Results Plexiform bone and osteon banding were mostly observed in nonhuman bones, whereas rarely in human bones.

结果丛状骨和骨单位带在猪、牛、羊、狗的密质骨中广泛存在，人骨组织中几乎不见；