- Destroying something is a kind of method for getting rid of something
- The immune system gets rid of bacteria once they have invaded the body
- So, the immune system destroys bacteria once they have invaded the body

- The immune system destroys bacteria once they have invaded the body
- Bacteria is a kind of pathogen sometimes
- Therefore, the immune system destroys pathogens that have invaded the body

- White blood cells are a part of the immune system
- White blood cells are a kind of cell
- So, white blood cells are a kind of cell that are part of the immune system

- The immune system destroys pathogens that have invaded the body
- White blood cells are a kind of cell that are part of the immune system
- Hence, white blood cells are a kind of cell that is a part of the immune system which destroys pathogens that have invaded the body

- White blood cells are a kind of cell that is a part of the immune system which destroys pathogens that have invaded the body
- A kind of cell helps destroy pathogens
- Therefore, white blood cell destroys pathogens in the body

So, white blood cell destroys pathogens in the body
Question
Which cells help to destroy pathogens such as bacteria that enter the human body?

Context
- Destroying something is a kind of method for getting rid of something 
- The immune system gets rid of bacteria once they have invaded the body 
- White blood cells are a part of the immune system 
- A kind of cell helps destroy pathogens 
- Bacteria is a kind of pathogen sometimes 
- White blood cells are a kind of cell