B cells vs T cells

B cells =

humoral immunity

function of b cells

Produce antibodies that neutralize or destroy pathogens in body fluids ("humors")

activation of b cells

B cells activated when exposed to antigen and receive help from helper T cells

after activation of b cells

- Differentiate into plasma cells (which secrete antibodies)

- Some become memory B cells for faster response upon future exposure

key product of b cells

Antibodies (immunoglobulins) - proteins that specifically bind antigens

T cells

cell mediated immunity

function of T cells

Directly attack infected or abnormal cells, or help coordinate the immune response.

activation of t cells require

Require antigen presentation via MHC (Maior Histocompatibility Complex) molecules

MHC I activates

CD8+ T cells

MHC II activates

CD4+ T cells

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