Fish, flies and bears, oh my! A new research breakthrough gives genetic proof of how differences in (very different) animals develop. An international team of biologists has identified the molecular ...

v. 1. Histological classification of bone and joint tumors of domestic animals / compiled and reviewed by M.V. Slayter [and others] -- v. 2. Histological classification of mesenchymal tumors of skin ...

As scientific knowledge evolves, researchers often find that their old assumptions — even ones underpinning centuries of work — no longer apply. The same principle is at play when it comes to ...

Strange fossils, including some that could be predecessors to modern animals, found in China shed new light on the evolution of large, complex organisms, and indicate that they may have diversified ...