Briefly Describe Humoral Immunity

Question 1

Explain B cells and antibody mediated (humoral) immunity

Answer 1

B cells recognise and bind antigen particles directly, without having to be presented with them by an antigen presenting cell.

They make antibodies.

Some of these antibodies are released into the bloodstream for distribution around the body but each B cell displays the antibody that makes on its cell membrane. These bound antibodies act as antigen receptors.

Helper T cells then enable the B cell to enlarge and proliferating, making w distinct types of B cell.

Question 2

What are the 2 types of B cells?

Answer 2

Memory B cell provide long term immunity for that antigen

Plasma cell produce antibodies that bind to, and destroy the antigen