The apical initial cells of the root top were arranged in cone shape and no typical histogen zones were found.

根的顶端原始细胞为圆锥状排列的原始细胞群，未见典型的组织原分区。

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Anatomical Structures of ActaeaRoot: root tip is consisted of initial cells of calyptrogen, periblem and plerome;

形态结构类叶升麻根尖由根冠和顶端分生组织构成；

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DATA SYNTHESIS: Stem cells were initial cells with self-renewing, high proliferation and multiple-directional differentiation ability.

资料综合：干细胞是一类具有自我更新、高度增殖和多向分化潜能的原始细胞。

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So, these memory cells are a way that your immune system keeps track of antigens that it's been exposed to for even if maybe the plasma cells that were producing antibody in response to the initial exposure have died and disappeared.

所以,这些记忆细胞,是人体免疫系统记忆抗原的一种方法,即使由浆细胞产生的抗体,在初次免疫应答中全部被消灭,记忆细胞仍然能迅速分化为抗体分泌细胞

耶鲁公开课 - 生物医学工程探索课程节选

The researchers said the early introduction of the cells might even interrupt the typical "chain reaction" of tissue damage which follows a stroke, in which the initial injury harms additional cells in surrounding areas.

BBC: Stem cell 'first aid' for rat stroke

And, also like fuel cells, that initial application may now be found in the specialised needs of space travel.

ECONOMIST: A more efficient way to make electricity in spacecraft

At least half of the damage, however, occurs hours later, as the initial injury sets off a complex and poorly understood chemical cascade that disables surrounding cells.

FORBES: Repairing The Brain