communicable diseases

Subdecks (6)

what is neutralisation
antibodies block the binding site on the pathogen this then binds to toxins and prevents entry to the host cell
what is agglutination
a large antibody can bind mainly pathogens together, they group the pathogens together and therefore it is too large to enter a host cell
what is clonal selection
when the crrect b and t lymphocytes are fund, which is specific to the antigen on the pathogen
what is clonal expansion
the b and t cells rapidly divide by mitosis (proliferation)
this is triggered by interleukins
what is differentiation
this happens once large numbers have been manufactured, the b and t cells differentiate into the specific cels that can now carry out the function
what is antigen presentation
on the surface of a macrophage, antigens are present thy signal for help by monokines and cytokines they also release interleukins which is another type of cytokines
the monokines attract neutrophils by chemo taxis
what are b plasma cells
make antibodies
what are b memory cells
remain in the blood and provide long term immunity
t memory cells  
provide long term immunity
t killer cells
attack and kill infected host cell stimulated by an interferon
t regular cells
suppress the auto immune response involved in preventing auto immunity
t helpercells
release cytokines (a type of interlukine ) stimulate immune cells to divide rapidly