There are four types of COVID-19 vaccines part 26

What are viral vector-based vaccines and how could they be used against COVID-19?

How do such vaccines trigger immunity?

This response includes antibody-producing B cells, as well as T cells, which seek out and destroy infected cells. T cells do this by examining the repertoire of proteins expressed on the surfaces of the cells. They have been trained to recognise the body’s own protein as “self”, so if they notice a foreign protein , such as an antigen from the pathogen, they will mount an immune response against the cell carrying it.


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