Microbiology Lecture 18

any immune response against a foreign antigen that is exaggerated beyond the norm

(a)  

immune system attacks body's own tissues

(a)  

disease that result from failure of the immune system

(a)  

localized or systemic release of inflammatory chemicals in response to antigen, immediate, develops in seconds

(a)  

antigen that stimulates Type I immediate hypersensitivity reaction

(a)  

type I immediate hypersensitivity

(a)  

Allergies:

Th2 release IL-4, stimulates B cells plasma (cells that produce IgE instead of IgG) sensitives to subsequent exposure

(a)  

Allergies:

when allergen enters the body, binds IgE - triggers release of inflammatory chemicals from granules - generate symptoms

(a)  

children exposed to environmental antigens like dust mites, molds, parasitic worms, and pet hair are less likely to develop allergies - some research supports this and some contradicts this

(a)  

allergen binds IgE or surface of sensitized cells and triggers cascade of reactions releasing chemical from granules in cells

(a)