application or intradermal injection of a substance to the skin to test the body's reaction to it. Such a test detects an animal's sensitivity to such allergens as dust and pollen, or to preparations of microorganisms believed to be the cause of a disorder.
A direct relationship graph is a graph where one variable either increases or decreases along with the other. The general equation for a direct relationship graph is y = mx + b, where y denotes the...
Direct Secure Messaging. What is Direct? Direct is a national encryption standard for securely exchanging clinical healthcare data via the Internet. It is also known as the Direct Project, Direct Exchange and Direct Secure Messaging. It specifies the secure, scalable and standards-based method for the exchange of Protected Health Information (PHI). It was developed in 2010 under a part of a federal project for standards-based healthcare communications.