What does the abbreviation WBC indicate?

The abbreviation WBC stands for "white blood cell," which refers specifically to the cells in the body that are part of the immune system. These cells help the body fight infections and other diseases. Each white blood cell has a different role in immune function, and they are produced in the bone marrow and found in the blood and lymphatic tissues. Although the term "white blood count" is commonly used in medical contexts to measure the number of these cells in a sample of blood, it is not what WBC itself stands for. The other options, while related to the concept of white blood cells, do not accurately capture the abbreviation's intent and standard usage in medical terminology.