Unraveling the mechanisms behind organ regeneration in zebrafish

The search for the holy grail of regenerative medicine -- the ability to "grow back" a perfect body part when one is lost to injury or disease -- has been under way for years, yet the steps involved in this seemingly magic ...

Dogs, maybe not, but old genes can learn new tricks

A popular view among evolutionary biologists that fundamental genes do not acquire new functions was challenged this week by a new study in the Proceedings of the National Academy of Sciences.

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