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13 Cards in this Set
- Front
- Back
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Primary Response |
response of body to first contact with antigen |
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Secondary Response |
(memory response) Response of host upon second exposure to an antigen A more intesive response characterized by high titer of IgG Based on presence of Memory cells |
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Cytokines |
Signaling molecules |
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T cells 2 kinds |
Helper T cells (CD4, Th) Cytotoxic T cells (CD8, Tc) |
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Helper T cells |
prodice cytokines to stimulate Tc sells, activate macrphages, and stimulate B cells |
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Cytotoxic T cells |
Destroy target cells with perforin |
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antigen presenting cell (APC) |
ingests, processes and displays antigens on its surface Macrophages and dendritic cells serve as APC Antigens are dislayed in association with a "self" molecule called MHC (major histocompatibility complex) |
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activated macrophages |
macrophages stimulted by ingesting Ag or by cytokines |
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Natural killer cells |
lymphocyts that destroy virusinfected cells + tumor cells |
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interrelationship of cell mediated and humoral immunity |
although considered two seperate branches, the humoral immune system and cell-mediated system funstion in concert T cells help stimulate B cells to produce Ab antibody-dependent Cell-Mediated Cytotoxicity(ADCC) |
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what is the difference |
i dont know |
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T dependent antigens |
require a TH cell for antibodies |
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T independent antigens |
antigens that stimulate B cell directly without help of T cells |
