剂量分布与治疗计划相关的几个概念【151介绍如下： 1．源组织（Source Tissue）／源器官（Source Organ） 指含有一定量放射性核素的机体组织或器官。
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Embryonic stem cells are the source of every cell, tissue and organ in the body.
身体中的每一个细胞，组织和器官都来源于胚性干细胞。
Remember, by expanding your aerobic capacity, you're also expanding your body's ability to deliver oxygen (the source of energy and health) to every organ and system of the body.
请记住，通过扩大你的有氧能力，你也增强了你的身体输送氧气(能量和健康的源泉)到全身各个器官各个有机系统的能力。
The leaf was the major storage organ for nitrogen and the source of nitrogen for grain filling.
叶片是前期组织氮素的重要贮存器官和籽粒灌浆中氮素的主要供给源。
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