l-glutamate at a concentration of 50 microm produced inward non-desensitizing currents at negative holding potentials in nearly every cell tested ( 83 % , n = 18 ) in physiological solutions , l-glutamate responses reversed at approximately -9 mv , and higher concentrations of this agonist introduced a desensitizing component to the response .
C0007634
cell
C0600508
component