1) White blood cells help the body fight off infections.

2) My doctor said my white blood cell count is too low.

3) White blood cells are also known as leukocytes.

4) The presence of white blood cells in urine can indicate infection.

5) Chemotherapy can reduce white blood cell counts.

6) Neutrophils are a type of white blood cell that can engulf and destroy bacteria.

7) The bone marrow is where white blood cells are produced.

8) White blood cells are part of the body's immune system.

9) A high white blood cell count may indicate the presence of an infection.

10) White blood cell transfusions can help boost the immune system in certain medical conditions.

11) White blood cells help the body fight off infections and diseases.

12) An abnormally low count of white blood cells can leave a person more susceptible to getting sick.

13) When a foreign invader enters the body, white blood cells work to eliminate it.

14) White blood cells attack and destroy harmful pathogens like bacteria and viruses.

15) Certain medications can affect the production of white blood cells.

16) White blood cells are a crucial part of the immune system's defense mechanism.

17) The bone marrow is responsible for producing white blood cells.

18) Doctors may order a blood test to check the levels of white blood cells in a patient.

19) White blood cells can detect abnormalities in the body and initiate a response to combat them.

20) Chemotherapy treatment can sometimes lower the number of white blood cells in a person's body.