The differentiation and immigration of neural stem cells are affected by internal factors (gene controls) and external factors ( surrounding environment of cells).
神经干细胞的分化、迁移受内因（基因调控）和外因（细胞周围环境）等因素的影响。
Any constituencies in the organization's external environment that are affected by an organization's decisions and actions (and that can influence the organization.)
组织外部环境中受组织决策和行动影响的任何相关者。
Most of the interventions are mainly embodied in the process of the implementation in health policy, which were affected by both external and internal environment.
政策干预主要体现在政策执行过程中，其受外部环境和内部环境的影响。
Most of the interventions are mainly embodied in the process of the implementation in health policy, which were affected by both external and internal environment.
政策干预主要体现在政策执行过程中，其受外部环境和内部环境的影响。
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