David Baltimore Quotes
When we talk about stem cells, we are actually talking about a complicated series of things, including adult stem cells which are largely cells devoted to replacing individual tissues like blood elements or liver or even the brain. 
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Talk | Stem | Cells | Talking | Complicated |
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I don't think people took it seriously because it was such an obviously unattainable goal. I was surprised, and I know lots of other people were surprised, that he chose a time so near, when we see it as a very difficult problem.
- David Baltimore
