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。
Infants who are exclusively breastfed early in life are more likely by age 4 or 5 to have longer telomeres, the protective bits of DNA that cap the ends of chromosomes in cells.
生命早期接受母乳喂养的婴儿在4、5岁时端粒(给细胞中染色体末端‘带帽’，用以保护DNA的片段)可能更长。
Infants who are exclusively breastfed early in life are more likely by age 4 or 5 to have longer telomeres, the protective bits of DNA that cap the ends of chromosomes in cells.
生命早期接受母乳喂养的婴儿在4、5岁时端粒(给细胞中染色体末端‘带帽’，用以保护DNA的片段)可能更长。
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