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Rh Antigens and Blood Transfusion
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Rh Antigens and Blood Transfusion

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Questions and Answers

What is the name of the small integral trans-membrane protein that carries the Vel antigen?

  • SMIM2
  • HLA-B7
  • SMIM1 (correct)
  • Tamm-Horsfall

    • What is the effect of anti-Vel on hemoglobin concentration?

  • Decreases hemoglobin concentration
  • Influences the mean hemoglobin concentration (correct)
  • Has no effect on hemoglobin concentration
  • Increases hemoglobin concentration

    • Which antigen is resistant to enzyme treatment and has a null phenotype common among Japanese?

  • Jra (correct)
  • Sda
  • Ata
  • Vel

    • What is the characteristic of anti-Sda agglutinates under the microscope?

    <p>Shiny and refractile</p> Signup and view all the answers

    Where is the Sda antigen not expressed in newborns?

    <p>RBCs</p> Signup and view all the answers

    What is the effect of anti-Ata on hemolytic transfusion reactions?

    <p>Severe reactions</p> Signup and view all the answers

    What is the origin of the Ata antigen?

    <p>From serum of black woman, Mrs. Augustine</p> Signup and view all the answers

    What is the characteristic of Bg antibodies?

    <p>Not considered clinically significant</p> Signup and view all the answers

    What is the target of anti-Bga?

    <p>Human Leukocyte Antigen (HLA)-B7</p> Signup and view all the answers

    What is the effect of enzyme-treated RBCs on anti-Vel?

    <p>Enhances reaction</p> Signup and view all the answers

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