calcium ionophore
While neither CD28 costimulation nor exogenous IL-2 or IL-4 prevented       cAMP inhibition in TCR activated cells, addition of calcium ionophore to TCR       activation prevented any inhibitory effects and caused cAMP to increase CD40L       expression.
While neither CD28 costimulation nor exogenous IL-2 or IL-4 prevented       cAMP inhibition in TCR activated cells, addition of  @SUBJECT$  to TCR       activation prevented any inhibitory effects and caused cAMP to  @PREDICAT$   @OBJECT$        expression.