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Immunoheme Lab Exam

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
A   A antigen, anti-B antibody  
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B   B antigen, anti-A antibody  
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O   no antigen, anti-A and anti-B antibody  
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AB   A and B antigen, no antibodies  
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somatic cells are diploid or haploid   diploid  
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the most common blood group antigens are of what chemical composition   glycoproteins/lipids  
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Name the 2 immunoglobulin classes that comprise most blood group antibodies   IgM and IgG  
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Expose you and determine your blood type   histoantigens  
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No H antigen (hh genotype)   bombay  
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type 1 linkage   beta 1-3 linkage; secretions, H substance  
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Type 2 linkage   beta 1-4 linkage; RBC antigens  
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H+H =   O  
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H+A=   A  
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H+B   B  
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H+A+B=   AB  
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what term is defined as the basic unit of inheritance   gene  
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Genetic makeup of a trait   genotype  
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physical expression of a trait   phenotype  
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Why is the ABO blood group the most clinically significant   acute hemolytic transfusion reactions  
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Universal blood donor   O  
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Universal blood receiver   AB  
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Universal plasma donor   AB  
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Universal plasma recipient   O  
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Looking for antibody?   React with patient cells  
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Looking for antigen?   React with anti-serum  
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Forward typing determines....   antigen  
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Reverse typing determines..   antibodies  
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What does LISS do?   enhancement tool, negates negative charge on RBCs so they can stack together  
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Which FUT gene goes with H antigen enzyme   FUT1  
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Which FUT gene goes with secretor enzyme   FUT2  
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Which FUT gene goes with lewis enzyme   FUT3  
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80% of the population has this gene   secretor gene  
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bind better and bind complement   IgM  
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Larger   IgM  
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Room temperature or less (won't cause physical harm during cross over because it won't react)   IgM  
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Direct agglutination   IgM  
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Smaller   IgG  
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Can cross the placenta and cause hemolytic disease of the newborn   IgG  
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Indirect agglutination   IgG  
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Worse for cross-over   IgG  
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Genes make antigens in what two ways?   Directly and enzymatically  
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what is the most common blood group in caucasian americans   O+  
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what is the least common blood group in general   AB-  
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what is the bombay genotype   hh  
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why can bombay people only receive bombay blood?   they have anti-h group and all other groups have H antigen  
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what enzyme codes the A gene; sugar transferred   nacetylgalactosaminyltransferase; nacetylgalactosamine  
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what enzyme codes the B gene; sugar transferred   galactosyltransferase; galactose  
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what enzyme codes the H gene; sugar transferred    
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what does DAT stand for?   direct antibody testing  
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what does IAT stand for?   indirect antibody testing  
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where is the antibody located when you're testing DAT?   cells  
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where is the antibody located when testing IAT?   plasma  
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What does DAT also go by?   Direct coombs test  
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what does IAT also go by?   antibody screen  
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antibody to lewis   Le a- b- ; IgM  
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Additive to extend storage life of RBC's and whole blood   CPDA-1  
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how do platelets need to be stored   @ room temperature in an agitator (keeps them mixed so they don't stick together and the pH stable)  
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is the lewis system technically a blood group?   no, antigen isn't manufactured by RBCs. Done by tissues and dumped into the plasma where RBC's adsorb it  
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two FUT genes = two fucose =   Leb  
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parabombay has ABH antigens in what but not in what?   secretions, RBCs  
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bombay phenotype has no ABH antigens   in secretions or on cells  
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what is AHG   Anti-human globulin  
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what genetic theory is the most recent and accepted as correct?   tippett  
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Anti-D gives you problems with...   future transfusions and pregnancies  
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Which genetic theory has no little d and has antithetical alleles (you get one or the other)   Fisher-Race  
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Numbers assigned to letters and their assigned positive or negative   Rosenfield terminology  
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What causes 1. increased osmotic fragility 2. mild hemolytic anemia 3. stomatocytes   Rh null  
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what is the volume of a typical unit of whole blood   450 ml +- 45 ml  
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4 components of whole blood donation   RBCs, AHF, fresh frozen plasma, platelets  
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what is the purpose of citrate?   anticoagulant  
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what is the purpose of phosphate?   buffers solution  
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what is the purpose of dextrose   energy  
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what is the purpose of adenine   increases survival (preservative)  
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3 important elements for platelet storage   temperature (rm. temp), gentle agitation, storage duration (5 days)  
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what is the gene product for the se gene   alpha 1,2 fucoslytransferase  
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