the fact or state in an organism of containing cells or tissues from two or more different species or from two or more genetically different living things

Chimerism becomes a sensitive topic when it involves growing entire human organs inside animals. 当涉及在动物体内培育整个人体器官时，嵌合性就成了一个敏感话题。

There is growing evidence that chimerism at the cellular level might be more common than previously thought: our bodies could contain cells from our mothers and even grandparents.