Question

Part A. Using a direct fluorescent antibody test, a patient's brain tissue sample is flooded with tagged antibody to rabies and it fluoresces when examined under a fluorescent microscope. What can be concluded from this test?

A. The quantity of rabies antigens per square millimeter of brain tissue.

B. The rabies virus is present in the patient's brain.

C. The rabies antibody is present in the patient's brain.

D. The quantity of rabies antibodies in the patient's serum.

Part B. Which if the following is NOT true about vaccinations?

A. Edward Jenner developed a small pox vaccination using cow pox scab crusts.

B. Louis Pasteur investigated immunization and developed a vaccine to rabies.

C. Vaccines are now available for all infectious diseases, although they are not available to all people.

D. The first documented vaccine-like procedures were variolation by the Chinese against smallpox.

Part C. If a researcher is using an immunodiffusion test to look for the presence of antibodies, __________ will be placed in the well that does not contain the patient's serum

A. tracer dyes

B. both antigens and antibodies

C. antibodies only

D. antigens only