You Have Been Running a High Fever, Have Stomach Cramps

Multiple Choice

You have been running a high fever, have stomach cramps, and have felt weak and disoriented for 5 days, so you set up an appointment with your physician. After asking you a few questions, she starts a physical examination by probing for swollen areas in your abdomen. You immediately sense that she is looking for

A) lymph nodes.
B) histamines.
C) antibodies.
D) antigens.