If you are unsure about any of the technical issues or definitions, refer to reliable sources such as the US National Institutes of Health stem cell information.

如果你对于任何技术问题或定义不太确定，请参考可靠的信息来源，诸如美国国立卫生研究院干细胞信息。

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Edward Kennedy, D-Massachusetts, who heads the committee, requested the names of the research groups who have human embryonic stem cell lines, information on where their research has been published, and details about proprietary rights and what ethical standards were used when the stem cells were derived.

CNN: NIH announces owners of stem cells

Researchers also hope that stem cell research will provide them with more information about human development and the causes of disease, and lead to changes in the development and testing of drugs.

CNN: NIH publishes draft guidelines for stem cell research