Biochemists in Japan were surprised to discover that the molecule hemoglobin in the blood works not only as an oxygen carrier, but when the blood is spilled as a result of aggression, accident or ...

Our biological processes rely on a system of communications -- cellular signals -- that set off chain reactions in and between target cells to produce a response. The first step in these often complex ...

Hemoglobin is well known as the molecule in blood responsible for carrying oxygen around the body, but when fresh mouse blood is detected in the nose, the molecule also works as a chemosensory signal ...