Answer:
A drug allergy is the abnormal reaction of your immune system to a medication
Explanation:
Environmental scanning is the process of gathering information about events and their relationships within an organization's internal and external environments. The basic purpose of environmental scanning is to help management determine the future direction of the organization.
Answer: Programs T lymphocytes to become regulator or effector T cells.
Explanation:
The thymus gland is found in the upper part of the chest between the lungs and behind the sternum.
Its function is to receive immature T lymphocytes produced by the red bone marrow and program them to become mature regulator or effector T cells which are involved in the immune system's response to foreign cells.