It is good practice for a receptionist to check on patients who are waiting in the reception area ________

Which of the following is a characteristic of NK cells?

a. They function in the innate immune response. b. They are capable of antibody synthesis c. They are made up the majority of lymphocytes in peripheral blood. d. They phagocytize bacteria.

Infection should be considered a possible cause of an airway obstruction in an infant or child, especially if he or she presents with:

A. extreme restlessness. B. drooling or congestion. C. skin that is cool and dry. D. acute respiratory distress.