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ACTUAL EXAM 2026 [BRAND NEW]
Individuals whose inheritance of the H gene is (hh) have what phenotype?
Bombay
Bombay individuals produce what antibodies?
anti-A, anti-B, anti-A,B, anti-H
Bombay individuals can only receive what type of donor blood?
Bombay
Anti-H lectin is made from what?
,Ulex europaeus
Which subgroup of A will show increased reactivity with anti-H lectin due to more
H antigen being present on the RBCs?
A2
What locus is the ABO gene located on?
9q
What locus is the H gene located on? What is the alternate name for the H gene?
19q, FUT1
What locus is the Se gene located on? What is the alternate name for the Se gene?
19q, FUT2
Approximately how much of the US population are secretors?
80%
Which type of precursor chain is found in secretions? What type of molecule is this
chain?
,Type 1, glycoprotein
Which type of precursor chain is found on red cells? What type(s) of molecule can
this chain be?
Type 2, glycoprotein, glycolipid, glycosphingolipid
How does norovirus infect the gut?
by binding to ABH antigens in secretions
Are secretors or nonsecretors not susceptible to common norovirus strains? Why?
Nonsecretors, because there are no H antigens in their secretions.
Approximately how many type A individuals are type A1?
80%
Approximately how many type A individuals are type A2?
20%
Inheritance of an A1 gene elicits production of high concentrations of .....
alpha-3-N-acetylgalactosaminyltransferase
, Alpha-3-N-acetylgalactosaminyltransferase converts ______ ______ H precursor
structures to ______ antigens.
almost all, A1
Which antigen is more complex and highly branched, A1 or A2?
A1
A2 is also referred to as....
common A
Type (A1/A2) will react with both anti-A and anti-A1, whereas type (A1/A2) will
only react with anti-A.
A1, A2
Most type A blood bank reagents are made of what type of cells?
A1
What is the immunodominant sugar on both A1 and A2 RBCs?
N-acetyl-D-galactosamine