signaling molecules
nounUK /ˈsɪɡnəlɪŋ ˈmɒlɪkjuːlz/
US /ˈsɪɡnəlɪŋ ˈmɑːlɪkjuːlz/
Tiny things in the body that carry messages from one cell to another.
Signaling molecules tell cells when to grow and when to stop.
OTHER MEANINGS
2. Molecules used by organisms to coordinate behavior, such as pheromones.
Ants use signaling molecules called pheromones to mark trails.
3. Proteins or small compounds released by cells to trigger a response in nearby or distant cells.
Immune cells release signaling molecules to call for help.
4. Chemical agents in plants that control growth and defense.
Plants produce signaling molecules when insects attack.