There are different types of white blood cell in the human body. One type is lymphocytes, which play a crucial role in defending against pathogens.
The normal range of lymphocytes in a healthy adult's blood is between 1.0 × 109 and 3.0 × 109 cells/dm3^33.
A patient recovering from intensive chemotherapy has a lymphocyte count of 2.5 × 108 cells/dm3^33.
Explain why this lymphocyte count of 2.5 × 108 cells/dm3 ^3\,3 makes the patient highly susceptible to bacterial infections.
