Which of the following are sources of antibodies for serological testing?

• A. Red blood cells
• B. Platelets
• C. Neurons
• D. Monoclonal antibodies

Answer: (D)

Verified step by step guidance

1. Understand that antibodies are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.
2. Recognize that serological testing involves the detection of antibodies in the blood to diagnose diseases or check immune status.
3. Identify that red blood cells, platelets, and neurons are not sources of antibodies. Red blood cells carry oxygen, platelets are involved in clotting, and neurons are nerve cells.
4. Learn that monoclonal antibodies are artificially produced in laboratories and are designed to bind to specific antigens, making them useful for serological testing.
5. Conclude that monoclonal antibodies are the correct source for serological testing as they provide a consistent and specific response to the target antigen.