In multicellular organisms, growth factors, hormones, neurotransmitters, and extracellular matrix components are some of the many types of ... and muscle cells. Other signaling molecules must ...

Because of cell signaling, tissues have the ability to carry out tasks no single cell could accomplish on its own. Different types of tissues, such as bone, brain, and the lining of the gut ...

Scientists have discovered that neural stem cells (NSCs) receive constant feedback from their daughter cells, influencing whether they remain dormant or activate to form new neurons and glia.