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65 Cards in this Set
- Front
- Back
Attack intracellular pathogens Cellular immunity |
T lymphocytes |
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Recognize and clear extracellular material Humoral immunity |
B lymphocytes |
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Activated B cell Produces antibody |
plasma cell
|
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Manufacture antibody that specifically recognizes antigen |
B cell
|
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Recognize and interact with antigen Produce cytokines CD4 |
T helper
|
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Clear viral infected, tumor, and foreign tissue graft cells CD8 |
T cytotoxic |
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any substance (usually foreign) that combines with an antibody or binds to a T cell |
Antigen |
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antigen in its role of eliciting an immune response |
Immunogen |
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Responsible for specificity Recognized by a specific antibody or receptor |
Epitope or antigenic determinants |
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Proteins composed of four polypeptide chains joined by disulfide bonds |
antibodies
|
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5 classes of Igs |
IgG, IgA, IgM, IgD, and IgE |
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Heavy chain determines class |
antibodies
|
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Imparts flexibility Allows each ag-binding site to function independently |
hinge region
|
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Idiotypes |
Variable region – antigen binding |
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Binds to antigenic determinant |
Fragment, antigenbinding (Fab) |
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Constant domain |
Fragment, crystallizable (Fc) |
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Parts of the antibody that are common to a host. |
Allotype |
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Ig class; determined by the heavy chains |
Isotype |
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Specific to the antigen stimulating the response. |
Idiotype |
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First antibody produced in immune response |
IgM
|
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Five basic Ig molecules held together with a joining (J) chain Pentamer 10 potential ag-binding sites |
IgM
|
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Direct agglutinate Efficient in complement (C’) activation |
IgM
|
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2 gamma heavy chains, two light chains Monomer Divalent |
IgG
|
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Inefficient in direct agglutination 2 needed to activate C’ |
IgG
|
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80 % of total serum concentration |
IgG
|
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serum half life 23 days
|
IgG
|
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serum half life 5-6 days
|
IgM |
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very efficient at Activation of the classical pathway of complement |
IgM
|
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Optimal temperature for reaction in immunohematologic tests room temp or below |
IgM
|
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Optimal temperature for reaction in immunohematologic tests 37 |
IgG
|
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Agglutination upon immediate spin |
IgM
|
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Agglutination in antiglobulin tests |
IgG
|
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Predominant in secretions First line of defense - prevents foreign agents from entering body Does not bind complement by classical pathway, but can activate alternate pathway |
IgA
|
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First Ig class produced in primary immune response Found on surface of unstimulated, resting B lymphocytes |
IgM
|
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Exists as monomer on unstimulated, resting B lymphocytes No blood group antibodies known to be ___ |
IgD
|
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Exists as monomer bound to basophils or mast cells Binding of antigen triggers release of histamine (allergic reactions). Involved in hypersensitivity - anaphylaxis, parasitic infections |
IgE
|
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All cross placenta |
IgG
|
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30+ serum proteins, made by liver cells |
complement
|
|
amorph allele
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ALLELE of a gene that appears to code for no detectable product
|
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Whichtype of oligosaccharide chain is typically found in secretions?
|
Type 1 chains
|
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type 1 chains found in secretions have what linkage?
|
β1→3 linkage |
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type 2 chains found on red cells have what linkage?
|
β1→4 linkage
|
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Hh and Se (secretor) are on chromosome
|
19
|
|
what gene produces a glycosyltransferase that acts on type 2 chains - H ag on RBCs
|
H |
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what gene produces glycosyltransferase that acts on type 1 chains - H ag in secretions
|
Se |
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converts both branched and unbranched H antigens
|
A1 |
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converts only unbranched H antigen
|
A2 |
|
dolichos biflorus is a source of
|
Anti A1 lectin from seed extracts |
|
anti h lectin
|
ulex europaeus |
|
Hh and Se (secretor) are on chromosome |
19
|
|
produces a glycosyltransferase that acts on type 2 chains |
H
|
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produces a glycosyltransferase that acts on type 1 chains |
Se
|
|
B13 linkage |
Type 1 – Body Fluids and Secretions |
|
B14 linkage |
Type 2 – Red Blood Cells (Body Fluids and Secretions) |
|
Produces -2-L-fucosyltransferase |
H gene |
|
Produces -3-Nacetylgalactosaminyltransferase |
A gene |
|
Produces -3-galactoslytransferase |
B gene
|
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Adds N-Acetylgalactosamine to H ag (GalNAc) |
A gene
|
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Adds D-galactose to H ag (Gal) |
B gene
|
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immunodominant sugars N-acetylgalactosamine (GalNAc) |
A |
|
immunodominant sugars D-Galactose |
B
|
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% population has Se gene (secretor) |
78
|
|
another source of Anti-A1 (lectin from seed extracts) |
Dolichos biflorus |
|
Anti-H lectin |
Ulex europaeus |
|
|
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