Use the following choices to answer questions 1 and 2:
a. hemolysis
b. hemagglutination
c. hemagglutination inhibition
d. no hemolysis
e. precipitin ring forms


Patient’s serum, influenza virus, sheep red blood cells, and anti-sheep red blood cells are mixed in a tube. What happens if the patient has antibodies against influenza?

Use the following choices to answer questions 4 and 5:

a. anti-Brucella

b. Brucella

c. substrate for the enzyme

Which is the third step in a direct ELISA test?

NAME IT A purified protein from Mycobacterium tuberculosis is injected into a person’s skin. A hardened, red area develops around the injection site within 3 days.

Use the following choices to answer questions 4 and 5:

a. anti-Brucella

b. Brucella

c. substrate for the enzyme

Which item is from the patient in an indirect ELISA test?

In an immunodiffusion test, a strip of filter paper containing diphtheria antitoxin is placed on a solid culture medium. Then bacteria are streaked perpendicular to the filter paper. If the bacteria are toxigenic,

a. the filter paper will turn red.

b. a line of antigen–antibody precipitate will form.

c. the cells will lyse.

d. the cells will fluoresce.

e. none of the above

Use the following choices to answer questions 1 and 2:

a. hemolysis

b. hemagglutination

c. hemagglutination inhibition

d. no hemolysis

e. precipitin ring forms

Patient’s serum, Chlamydia, guinea pig complement, sheep red blood cells, and anti-sheep red blood cells are mixed in a tube. What happens if the patient has antibodies against Chlamydia?

Discuss the roles of antibodies and antigens in an incompatible tissue transplant.

Which of the following is not a function of antibodies?

a. Opsonization

b. Activating complement proteins

c. Activating T helper cells

d. Enhancing phagocytosis

e. Antigen neutralization

A patient has developed a type III reaction to a drug. Which of the following is the most immediate action required? (NCLEX/HESI/TEAS)

a. Lower the patient’s fever.

b. Stop administration of the drug.

c. Treat the patient’s skin rash to avoid possible infections.

d. Hook the patient up to an IV for rehydration therapy.

e. Administer antihistamines to limit the response