vaccines Flashcards
incidence of colds decrease with?
age
vaccines create a fake ____ ?
illness
what does the immune system identify?
when an infection occurs
what is the lag-time between exposure and max response
2-3 days
what cells are targeted
invading cells
what are antibodies
key recognition devices (Y shaped molecules)
what do antibodies stick to
epitopes
body makes many different
antibodies (small amounts)
antibody production is
random
what carries antibodies
B cells
each B cell recognizes 1
epitope
amplified B cells target
invaders
each infection generates
memory cells
as you get older, your body contains more
memory cells
more than ____ of B cells in an adult are memory cells
50%
where do viruses live inside
cells and escape B cells
body makes ??
T cells to destroy viruses
killer T cells recognize
MHC display
helper T cells send
the kill signals
memory cells give you
immunity