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 ...

There are millions of different types of living things on Earth. In order to keep track of them all, scientists put living things into groups based on characteristics that they have that are the same.

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 ...