Pufferfish at the 'beak' of evolution: Why humans don't continuously replace their teeth

Prickly pufferfish could hold the key to why humans do not continually replace their teeth and may lead to advances in dental therapies.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/dentistry/~3/0Ulc9OpZz5s/120514112826.htm

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