For example, prokaryotic organisms have sensors ... spaces between adjacent neurons or between neurons and muscle cells. Other signaling molecules must move much farther to reach their targets.

as well as between these cells and the extracellular matrix. These signaling pathways are critical to maintaining the state of equilibrium known as homeostasis within a tissue. For example ...

The human body and its organs are composed of a wide variety of cell types. Although all cells contain the same genes, they ...

An often-ignored type of cell in the brain plays a dynamic and surprisingly complex role in our ability to process information, according to new research.

The endocannabinoid system (ECS) is a complex cell-signaling system that helps regulate ... and which endocannabinoid it binds to. For example, endocannabinoids might target CB1 receptors in ...