A ____ artifact is caused by the presence of metal in the patient.

Which of the following supports the HPI element, "associated signs and symptoms"?

A. Cough leaves her breathless and sweaty…terminating with gagging and occasional vomiting last night B. Painful, productive cough….producing thick green sputum C. Severe, stabbing pain (7/10) D. Patient reports pain in her lower chest and upper abdomen

Certain viruses protect themselves from attack by the human immune system by creating which of the following?

A) an envelope B) an interferon C) an antitoxin D) a virion