Pretend that you are a doctor and you read your patient’s blood test results. You notice that the patient’s leukocyte levels have increased. What will be your conclusion?

This is an indication of immune response to a particular infection.It shows that the WBC are fighting against  certain infections which may have entered the host(patient).In some cases, when an individual engaged in physical stress  or disturbed  emotionally, The WBC level may also rise.

Explanation:

the cell cycle is the final answer! : )