EXAM 2

Immunology exam 2 covers chapters 5, 6, 7, 8

what Prevents autoimmune issues?

negative selection

Helper T cells are also known as ?

CD4+ T cells

Cytotoxic T cells are also known as

CD8+ T cells

Adjuvants are substances that function mainly by?

inducing expression of co-stimulators

CD8+ T cells are also known as ?

CTL (Cytotoxic T lymphocytes)

MHC I exist on [blank] cells and display [blank] antigens.

1. nucleated cells

2. internal antigens

TH17 cells induce inflammatory reactions that destroy ?

extracellular bacteria

Th1 and Th2 are subsets of?

CD4+ T cells

[blank] cells are involved in the allergic reactions of environmental antigens

Th2 cells

CD4+ T cells are also known as ?

T helper cells

Plasma cells are a type of?

B cell

Antibody [blank] allows a inhibition of further Ab production

feedback

[blank] enhances phagocytosis by coating microbes with C3b

Opsonization

what Is a result of junctional diversity?

Immunoglobulin and TCR ( T cells and B cells) 

what activates macrophages?

interferon gamma from immune T cells (TH1)

who does the direct killing of cells?

activated macrophages do direct killing not immune T cells

what does en vivo mean?

inside mouse or something alive

what does en vitro mean?

done on a petri dish

How can you kill listeria ?

if you add more activated macrophages since they do direct killing

are breastfed babies susceptible to listeria?

yes, because they only have an innate immune system and can not make antibodies till 2 months old.

what are two populations at risk for listeria?

1. senior citizens (older than 65)

2. babies.