顶端分生组织上的侧生突起发育成叶的原基，与原形成层有关。
Leaf buttress a leaf primordium, appearing as a protuberance on the side of the stem apex, produced by periclinal division of the tunica and corpus, and associated with a procambium.
一小块球状突出物或头状部分，如一根骨头的突起或一个昆虫的触角的顶端。
A small knob or head-shaped part, such as a protuberance of a bone or the tip of an insect's antenna.
这项研究表明，迁移神经元中前导突起顶端通过肌球蛋白介导的肌动蛋白纤维流动活跃的拉动胞体向前运动。
Thus, the tip of the leading process actively pulls the soma forward during neuronal migration through a myosin II-dependent forward F-actin flow along the leading process.
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