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immunity
(resistance) ability to fight/ward off pathogens
chyle
fluid in lacteals rich in lipid
susceptibility
lack of resistance
MALT
mucosa associated lymphatic tissue
metastasis
spread of disease, occurs quickly in lymph and blood
lymphedema
excess fluid in interstitial space
elephantiasis
parasite that blocks lymph vessels = edema
MAC
membrane attack complex (revolved around complements)
perforins
creates small hole to cause cytsosis
granzymes
induces apoptosis
antigens
substance w/ reactivity and immunogenicity/antibody generator
MHC
major histocompatibility complex: membrane protein that helps t cells recognize Ag
APC
antigen presenting cells (macrophages, b cells, dendritic cells), present MHC 2 to helper T cells
exogenous Ag
dust, pollen, bacteria
all body cells
(except RBCs) present MHC1 to cytotoxic T cells
endogenous Ag
virus, transplanted tissue, cancer cells
