Add Yahoo as a preferred source to see more of our stories on Google. May 16—A cell's primary cilia function like antennae. Operating like a 24/7 news outlet, these hairlike structures are present on ...

A human kidney is built once, before birth, and the rules guiding its construction have been largely inferred from animal ...

Our immune systems kick into gear when we have an infection, and there are a variety of processes used by the body to eliminate pathogenic invaders. Inflammation is a normal part of the immune ...

Cells carry their own growth switches. When enough nutrients—amino acids in particular—are available, cells flip this switch ...

Most cell signals are chemical in nature. For example, prokaryotic organisms have sensors that detect nutrients and help them navigate toward food sources. In multicellular organisms, growth factors, ...

Complex sugar-protein molecules that sense external messages to help a cell grow or respond to its environment can now be tracked and analyzed, using a Nobel Prize-winning chemistry technique. A ...