essay important points

purpose of immunizations

protects rhe bodu against specific pathogens without having to get the illness

what immune system response does it give

adaptive immune system response (B and T cells)

what doed the body poduve after learning the antigens

memory cells

specific immunity

artifically aquired active immunity

the step by step process

1. antigen enters the body

2. antigen presenting cells (APCs) display fragments using MHC molecules to activate T cells

3. Helper T cells help activate B cells through signaling molecules called Cytokines

4. B lymphocytes proliferate and differenciate into plasma cells that prodice paticular antibodies

5. antibodues bind to the pathogen and neutralizse or help eliminate

6. memory B and T cells

whats the initial response called

primary immune response

how booster shots work

over time antibody levels may decrease so mamoryy B and T cells recognise again, faster, B cells can rapidly produce into new plasma cells

the booster shot is also called

secondary immune response

why are booster shots needed

antibody levels may decreade over time, can increase quality and durability, change in pathogens

antibody

protein produced by plasma cells that binds to specific antigen

plasma cell

activated B cell that secretes antibodies

helper T cells

coordinates immune response and helps B cells

memory B/T cells

allow faster response to future exposers

active immunity

your own immune response

primary immune responve

inital response to an antigen

secondary immune response

faster, stronger response after re-exposure

booster shot

additional dose that reinforces the immune response