original_query: What is electrotropism and how does it affect the growth or migration of cells?
query: What is electrotropism and how does it affect the growth or migration of cells?
answer: Electrotropism is the growth or migration of an organism, usually a cell, in response to an exogenous electric field.  Various cell types, including nerve cells, muscle cells, and pollen tubes, exhibit this response, growing or migrating preferentially in the direction of the electric field.