Cells of the adaptive immune system include:

Leukocytes that engulf pathogens are known as:

The immune system recognises self versus non-self:

Vaccines help stimulate which part of the immune system?

Oh no! You have a virus! Which cells type do you want your body to activate?

Which cells help recognise and bind to specific pathogens to aid destruction?

Allergic response is an over-reaction to an allergen which triggers _____________ production.

______________ filter lymph fluid for bacteria, viruses, cancer cells and harmful substances.