signal transduction By Ivan Suarez Robles 15 Nov, 2010 A process in biology where a signal from outside the cell is converted to a change within the cell.Related Articles: Glossary: mitogen-activated protein (MAP) kinaseDrs. James Gusella and Marcy MacDonaldBrain-derived neurotrophic factor (BDNF)Ethyl-EPA (Miraxion, LAX-101)Glossary: signaling pathway