A major focus of the research was a protein called HIF1A (hypoxia-inducible factor 1 alpha), which plays an important role in ...

Millions of years ago, something remarkable happened in Earth’s oceans. Marine animals began to live in deeper parts of the sea, where life had not been possible before. New research shows that this ...

Some animals can regrow lost body parts. Salamanders and frog tadpoles can rebuild entire limbs after amputation. Mammals cannot. For decades, biologists have tried to understand why. Now a team led ...

Salamanders regrow entire limbs. Mice, like humans, grow scar tissue instead. A study published in Science now offers a ...

Researchers have discovered why amphibians regenerate limbs and mammals do not ...