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.
Trade (gay slang) This article is about slang term. For related meanings, see Rough Trade (disambiguation). Trade (also known as Chow) is a gay slang term originating from Polari and refers to the (usually) casual partner of a gay man or to the genre of such pairings. Men falling in the category of trade are not gay-identified.