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Blood Typing01:10

Blood Typing

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Understanding an individual's blood group is a critical component of transfusion medicine. It ensures compatibility in blood transfusions, organ transplants, and even during pregnancy. Determining these blood groups involves the ABO and Rh blood typing systems, utilizing specific antigens and corresponding anti-sera to identify an individual's blood type.
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Bone Marrow Sampling and Transplants01:22

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Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
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Blood Transfusion01:15

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
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Human blood is classified into different types based on the presence of antigens on the red blood cell's surface and antibodies in the plasma. Proper identification of blood type is essential for successful blood transfusion. The International Society of Blood Transfusion has identified 38 human blood types based on the surface antigens on the red blood cells. The most common types are ABO, Rh, and MNS blood types.
ABO blood group
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Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
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Updated: Sep 25, 2025

Detection of Residual Donor Erythroid Progenitor Cells after Hematopoietic Stem Cell Transplantation for Patients with Hemoglobinopathies
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A Sherlock Approach to a Kindred With a Variable Immunohematologic Phenotype.

Kelly Walkovich1, Eyal Grunebaum2

  • 1Division of Pediatric Hematology/Oncology, Department of Pediatrics, C.S. Mott Children's Hospital, University of Michigan, Ann Arbor, Mich.

The Journal of Allergy and Clinical Immunology. in Practice
|April 26, 2022
PubMed
Summary

Diagnosing inborn errors of immunity (IEI) in children with frequent infections is challenging. A detailed patient history and family assessment, combined with careful lab analysis, aid in identifying rare conditions like WHIM syndrome.

Keywords:
AntagonistsCXCR4G-CSFHPVHypogammaglobulinemiaImmunoglobulinsMyelokathexisNeutropeniaWHIMWarts

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Area of Science:

  • Immunology
  • Genetics
  • Pediatrics

Background:

  • Leukopenia and sinopulmonary infections are common in children, complicating the diagnosis of inborn errors of immunity (IEI).
  • Warts, hypogammaglobulinemia, infections, and myelokathexis (WHIM) syndrome presents with significant phenotypic variability, increasing diagnostic challenges.

Purpose of the Study:

  • To highlight the diagnostic utility of a meticulous, collaborative approach in identifying IEI, specifically WHIM syndrome, within a complex family.
  • To review the genetic basis, diagnostic strategies, clinical manifestations, and management of WHIM syndrome.

Main Methods:

  • Detailed medical and family history analysis.
  • Iterative diagnostic reasoning incorporating laboratory results and treatment responses.
  • Case study of a kindred with WHIM syndrome exhibiting variable phenotypes.

Main Results:

  • A kindred with WHIM syndrome was identified through the presentation of a child with intermittent neutropenia and recurrent sinopulmonary infections.
  • The case illustrates the importance of a comprehensive, interdisciplinary diagnostic strategy for complex IEI cases.

Conclusions:

  • A systematic, collaborative diagnostic approach is crucial for timely identification of IEI, including phenotypically diverse conditions like WHIM syndrome.
  • Understanding the genetic underpinnings and clinical spectrum of WHIM syndrome is essential for effective patient management.