University:
York University
Course:
SC/BIOL 3120 | Immunobiology
Academic year:

2023
Views:

76

Pages:

1
Author:

Niklas

Immunological Memory antigen: any substance that binds to an immune receptor memory a hallmark of adaptive immunity these ents are typically stored in the bone morto cleared primary response initialed upon first es pasure to on antigen, and some immune cells (memory) are left behind offer the antigen →secondary response: initiated upon second exposure to the same antigen stimulates memory lymphocytes Response is ALWAYS specific to the antigen vaccines give you the first exposure without having to get sick So that when the body becomes exposed to the antigen, there is an immediate immune response the immune response to specific pathogens depends on: •the structure of the pathogen. location initacellular/extra cellular is 5 Immunity vs Tolerance Self vs nen-self discrimination the ability to fight infection without killing ourselves in the process example: inflamation is a gond thing entil it's not chronic inflamation is tally bad there has to be a balance between immunity and tolerance tolerance a state of immunologic untesponsiveness to perticular antigens/sets of antigens ما Dar bodies wary of ignoring things that we do not need to have an ermane sesponse to! most of the time we want to have a response against "non-self" and be tolerant with "self" BUT is the immune system correctly balanced when it ALWAYS attacks forign surotances and is ALWAYS tolerant of self fissue? NO! non- FOOD is not considered self" but we da nat want to have a response every time it's ingested this is allergies! ORGAN TRANSPLANT OF PREGNANCY we do not want a response non-self" CANCER CELLS is "self" that we de want a response against BIG PICTURE nature does not care where a pathway begins/ends