Both root and root cap are covered by a sheath-like structure called the coleorhiza.
根和根冠被一鞘状结构，即胚根鞘所覆盖。
Objective:To explore the utilization of four angles coil cable root cap attachment in single side distal extension removable partial dentures.
目的：探讨四角圈簧根帽附着体在后牙游离缺失单侧修复中的应用。
Calyptogen a layer of meristematic cells covering the root apical meristem in some plants (e. g. grasses) that gives rise to and maintains the root cap.
根冠原：在一些植物中覆盖根顶端分生组织的一层具有分生能力的细胞，根冠原可以产生和维持根冠。
Calyptogen a layer of meristematic cells covering the root apical meristem in some plants (e. g. grasses) that gives rise to and maintains the root cap.
根冠原：在一些植物中覆盖根顶端分生组织的一层具有分生能力的细胞，根冠原可以产生和维持根冠。
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