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Related Experiment Videos

The B3 phenotype in Chinese.

M Lin-Chu, R E Broadberry, P W Chiou

    Transfusion
    |September 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Researchers identified rare blood subgroups B3 and A1B3 in Taiwan. These subgroups exhibit unique antigen characteristics, suggesting potential qualitative and quantitative differences in the B antigen.

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    Area of Science:

    • Blood group serology
    • Immunogenetics
    • Transfusion medicine

    Background:

    • The ABO blood group system is crucial for blood transfusion safety.
    • Variations in ABO antigens can lead to transfusion complications.
    • Subgroups of ABO antigens present diagnostic challenges.

    Purpose of the Study:

    • To report the prevalence of rare blood subgroups B3 and A1B3 in Taiwan.
    • To characterize the serological properties of these rare subgroups.
    • To investigate potential differences in the B antigen structure.

    Main Methods:

    • Screening of donated blood at Taipei Blood Donation Center.
    • Serological testing using polyclonal and monoclonal anti-A, anti-B, and anti-H reagents.
    • Mixed field agglutination analysis.

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  • ABH antigen detection in saliva of secretors.

    • Main Results:

    • Sixteen cases of subgroup B3 and two cases of subgroup A1B3 were identified.
    • Frequencies were estimated at approximately 1 in 900 for B3 and 1 in 1800 for A1B3 among Chinese in Taiwan.
    • B3 red cells showed mixed field agglutination with anti-B and anti-A,B, and strong reaction with anti-H.
    • Reverse grouping revealed anti-A activity, with B and H substances in secretor saliva.
    • Significantly low avidity reactions were observed with both polyclonal and monoclonal antisera for B3 and A1B3 red cells.

    Conclusions:

    • The identified B3 and A1B3 subgroups possess distinct serological profiles.
    • The low avidity and differential reactions suggest qualitative and quantitative variations in the B antigen.
    • These findings highlight the importance of careful serological investigation for rare blood types.