Briefly describe how a vaccine works.

A vaccine is a dead or attenuated (weakened) form the pathogen. When injected into the host, the antigens on the surface of the pathogen generate an immune response. This stimulates the production of white blood cells which divide into various types of cells (e.g B-helper cells, T-killer cells, and B-memory cells). These memory cells linger in the blood stream and mean that if the host is ever infected with the same pathogen again, the memory cells divide and produce antibodies to fight the disease before the host displays symptoms.

KP
Answered by Krishan P. Biology tutor

3588 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

What role does auxin play in the processes of phototropism?


List the main structural differences between a typical animal, plant and bacteria cell


True or false - when you focus on a NEAR object, the lens becomes THINNER allowing light to reflect GREATLY.


Name 3 differences between RNA and DNA (3).


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning