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- Stem cells in different tissues differ in their niches.Stem cell niches regulate stem cell self-renewal and differentiation. 干细胞巢通过不同信号途径调控着干细胞的行为,使干细胞的自我更新和分化处于平衡状态。
- It has been illegal to buy sperm or eggs since 2004.The change was part of Canada's new reproductie technology law, which also forbids payment for surrogacy and regulates stem cell research. 加拿大卫生部称,自从联邦政府认定有偿捐精非法以来,加拿大的精子库存显著减少了,并且来自美国的精子进口供应也最终会被切断。
- The arrangement of leaves on a stem. 叶序茎上叶子的排列次序
- I've read the book from stem to stern. 这本书我已从头至尾读完。
- Measures have been taken to stem inflation. 已采取措施抑制通货膨胀。
- The liner has been refitted from stem to stern. 那艘班轮已经全面整修。
- He descended from an ancient stem. 他出身于一个古老的家系。
- Next to or facing the main stem or axis. 近茎轴一侧的紧挨着主茎或轴的,面向主茎或轴的
- A plant having no permanent woody stem; an herb. 草本植物,花草没有永久木茎的植物; 草本植物
- A regulating mechanism, as in a vehicle or electric device. 控制器起控制作用的机械装置,如在交通工具或电动装置上
- regulating stem 调节杆
- A glass, usually with a stem, from which wine is drunk. 酒杯喝酒的玻璃杯,通常有柄脚
- A Turkish tobacco pipe with a long stem and a red clay bowl. 土耳其长烟管一种有长杆和红色的黏土做的烟斗的土耳其的烟管
- The sap flowed out when he broke the stem of the flower. 他把花茎折断,汁液就流了出来。
- The sea ran high, and swept the little craft from stem to stern. 海面上风急浪高,小船从头至尾都被浪头冲刷著。
- She sat twirling the stem of the glass in her fingers. 她坐在那里用手指捻著玻璃杯的杯颈。
- A standard procedure for regulating data transmission between computers. 规程为管理调整计算机间数据交流的标准程序
- Regulating features maintain even current output. 调控的特点,即使维持目前的产量。
- Improved skill at regulating capacitor capacity. 关于改良调节电容容量的技术。每级技能增加电容容量5%25
- Improved skill at regulating shield capacity. 关于改良调节保护盾容量的技术。每级技能增加保护盾容量5%25