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SBB Human Blood Groups Test |Questions with 100% Correct Answers
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SBB Human Blood Groups Test |Questions with100% Correct Answers
The acquired B phenomenon is only found in what ABO group? - ✔A blood group
A2 subgroup - ✔Anti-A1 does not react. 1-8% of persons will produce Anti-A1
Anti-Lu3 is associated with - ✔Recessive type Lu(a-b-)
The dominant Lu(a-b-) type is associated with what gene? - ✔In(Lu)
What substance could be used to rule out anti-E in the presence of anti-Lub? - ✔DTT
Which pair of Lu alleles go together - ✔Lu8 and Lu14
Lu6 and Lu9
Au^a and Au^b
Persons who are group B are more common among which population? - ✔Black/Asian
Red cells that lack glycophorin A, also lack - ✔En^a antigens
Anti-ENKT reacts with which RBCs? - ✔En^a FS
,What is a lectin? - ✔Seed extracts that agglutinate human cells with moderate specificity.
All of the following are representative of the Lewis antibodies - ✔They can be neutralized by
Lewis substance; They occur frequently in pregnant women; They re enhanced by enzymes
Why can anti-H sometimes be found in A2B persons? - ✔The specific immunodominant
sugar blocks the presence of H antigen.
Why is determination of Rh status crucial for obstetric patients - ✔All Rh negative mother
s are possible candidates for Rhogam
Red cells that phenotype as Le(a-b-) will convert to Le(a+b-) when incubated with plasma from
an adult containing? - ✔Le(a+) substance
What genotype does hh represent - ✔Bombay
The Rh gene is located on which chromosome? - ✔Chromosome 1
Why are Lewis antibodies not implicated in hemolytic disease of the newborn? -
✔Lewis antigens are poorly developed at Birth
What substances would be present in the saliva of a person with the LeLe HH SeSe AA
genotype - ✔A, H, Lea, Leb
How is Le(b) substance formed - ✔L fucose is added to subterminal N acetylglucosamine
of type 1H substance
A person with the Oh phenotype can only receive red cell transusion from? - ✔Oh persons
, What amino acid is specific for the S antigen? - ✔Methionine
What is true regarding the U antigen? - ✔Most U negative are also S-s-; Resistant to enzyme
treatment. U negative is found among African Americans
Why is it imperative that homozygous cells be employed when ruling out Kidd antibodies?
- ✔Anti-Jka and -Jkb may appear compatible with heterozygous cells
Anti-I is associated with what infectious agent? - ✔Mycopasma pneumonia
What Kidd antibody will react with all panel cells but not the autocontrol - ✔Anti-Jk3
All of the following are characteristics of anti-Fya and anti-Fyb - ✔Implicated in
hemolytic transfusion reations; reacts best in AHG; IgG
This antibody typically causes red cells to exhibit a refractile shiny appearance and mixed
field reactions at AHG, and can be neutralized by most human urine - ✔Sda
What solution can denature Bennett-Goodspeed antigens? - ✔Chloroquine diphosphate
Persons with the McLeod phenotype do not express this marker. - ✔Kx
DTT will destroy which blood group antigen - ✔Kell
Chronic granulomatous disease (CGD) is associated with what phenotype? - ✔McLeod
What P antigens are present in the p phenotype - ✔none
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