The MMR vaccine is given to children in order to prevent the conditions measles, mumps and rubella. Describe how a vaccine works?
- Vaccines contain dead or inactive forms of a pathogen. - These dead or inactive forms stimulate the white blood cells to produce antibodies against the pathogen. - If a person is infected by the pathogen in the future then the white blood cells can make antibodies more quickly against the bacteria to prevent it making the person ill
VH
Related Biology GCSE answers
All answers ▸explain how the body regulates blood sugar concentration
Describe 2 ways in which the body prevents entry of microorganisms into the body
Describe the differences between aerobic and anaerobic respiration.
Why is the human circulation em called a double circulation system?