Features

 by diffusing molecules

• autocrine signaling
• paracrine signaling
• endocrine signaling

 by membrane molecules

• cell-cell signaling
• cell-matrix signaling

References

 Ffrench-Constant C, Colognato H. Integrins: versatile integrators of extracellular signals. Trends Cell Biol. 2004 Dec;14(12):678-86. PMID: #15564044#

 Bhalla US. Models of cell signaling pathways. Curr Opin Genet Dev. 2004 Aug;14(4):375-81. PMID: #15261653#

 Cavallaro U, Christofori G. Cell adhesion and signalling by cadherins and Ig-CAMs in cancer. Nat Rev Cancer. 2004 Feb;4(2):118-32. PMID: #14964308#