3.2 test Flashcards
how does a vaccine help the immune system
A vaccine is a weakened or dead form of a disease pathogen
what happens once the vaccine is in your body
the immune system make antibodies against the antigens in the valley
what is histamine?
histamine makes the nose run and the eyes water people can take an antihistamine drug to reduce the effects
how does aids effect the immune system
aids is a disease that is caused by a type of virus called hiv
what is HIV
hiv is a dangerous pathogen that attacks the helper T cells of the immune system
what happens if there is no helper T cells
without helper T cells the body cannot trigger the action of the killer T cell and the B cells
what does the inactive virus do?
it cannot make new viruses because it has been exposed to radiation
what Is attenuated virus
its a weaker version of the virus it will make more viruses but at a very slow rate
what the point of the vaccine
is to allow your bodies to create antibodies before the real virus infects you it creates memory B cells to remember the virus
how can hiv spread
from unprotected sex and sharing needles which spread hiv
what are aids
aids drop to such a low level that they are no longer capable of proving your body
how does hiv work
they insert itself Into your dna but it doesn’t kill any cells it keeps the cell alive while pumping hiv
