DTH reactions may include, but are not limited to, contact dermatitis (eg, poison ivy rash), tuberculin skin test reactions, granulomatous inflammation (eg, sarcoidosis, Crohn disease), allograft rejection, graft versus host disease, and autoimmune hypersensitivity reactions.
tricks of the trade. 1  Clever ways of operating a business or performing a task or activity, especially slightly dishonest or unfair ones. For example, Alma knows all the tricks of the trade, cutting the fabric as close as possible, or The butcher weighs meat after it's wrapped; charging for the packaging is one of the tricks of the trade.
DEFINITION of 'Trade Trigger'. Any type of event that triggers a securities trade. A trade trigger is usually a market condition, such as a rise or fall in the price of an index or security. Trade triggers are used to automate certain types of trades, such as selling shares of a stock when the price reaches a certain level. Next Up.