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8 Cards in this Set

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What is Innate Immunity?
non-specific defense mechanisms, including phagocytic cells.
What is Adaptive Immunity?
specific immune responses, including antibody production by B cells and the selection of active T cells with a T cell receptor.
What is an antigen?
anything causing an immune response
What is a pathogen?
disease causing microorganism
Define tolerance (in biological terms).
non-reactivity of the immune system to self
What is Autoimmunity?
immune reaction to self; failure of tolerance
What are Chemokines?
They are released by pathogens and infected tissues and attract lymphocytes.
What are Cytokines?
They are released by cells to signal action by other cells.