Glossary of "The Cell (5th ed.)" by Alberts et al. (2008)
- The processes in which cells are stimulated or inhibited by extracellular signals, usually chemical signals produced by other cells.
- Alberts, B., Johnson, A., Lewis, J. Raff, M., Roberts, K. & Walter P. 2008. Molecular Biology of the Cell, 5th ed. -xxxiii + 1268 pp. Garland Science, New York.