What is produced by the process of clonal expansion in the immune system?

• A. A variety of different lymphocytes
• B. A single type of antigen
• C. A large number of identical B or T cells
• D. A diverse array of antibodies

Answer: (C)

Verified step by step guidance

1. Understand the concept of clonal expansion: Clonal expansion is a process in the immune system where a single B or T lymphocyte, once activated by an antigen, proliferates to produce many identical cells.
2. Identify the role of clonal expansion: The purpose of clonal expansion is to amplify the number of lymphocytes that can recognize and respond to a specific antigen, thereby enhancing the immune response.
3. Recognize the outcome of clonal expansion: The process results in a large number of identical B or T cells, all derived from the original activated lymphocyte, which are capable of targeting the same antigen.
4. Differentiate between the options: A variety of different lymphocytes and a diverse array of antibodies are not produced by clonal expansion. Instead, it produces identical cells specific to one antigen.
5. Conclude with the correct understanding: Clonal expansion is crucial for mounting an effective immune response by increasing the number of specific lymphocytes that can combat the invading pathogen.