mbryonic stem cells can be too flexible, citing experiments on mice in which they developed teratomas (tumors containing many different tissues-gut, skin, teeth, etc.) after being injected with the cells (Gottlieb). Furthermore, some say that research involving adult stem cells is closer to a therapeutic application, noting that if the body is injected with its own cells, the immune system's rejection reflex will not be activated (Gottlieb). With valid points on each side, it is easy to see that only an informed opinion on this matter will pass in any competent conversation. After a well-rounded look at this topic, I believe I hav
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