Questions: Which blood samples show agglutination? A. Anti-A B. Anti-B C. Anti-D D. None

Which blood samples show agglutination? A. Anti-A B. Anti-B C. Anti-D D. None
Transcript text: Which blood samples show agglutination? A. Anti-A B. Anti-B C. Anti-D D. None
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Solution

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The answer is A: Anti-A.

Explanation: Agglutination occurs when antibodies in the blood react with antigens on the surface of red blood cells. The table provided shows two columns labeled "Anti-A" and "Anti-B," which refer to the antibodies used to test for the presence of A and B antigens on the red blood cells, respectively.

  • Option A: Anti-A

    • If agglutination occurs in the presence of Anti-A, it indicates that the blood sample contains A antigens. Therefore, the blood type could be A or AB.

  • Option B: Anti-B

    • If agglutination occurs in the presence of Anti-B, it indicates that the blood sample contains B antigens. Therefore, the blood type could be B or AB.

  • Option C: Anti-D

    • Anti-D is used to test for the Rh factor (D antigen). The question does not provide information about Anti-D, so this option is not relevant to the given data.

  • Option D: None

    • This option would be correct if no agglutination occurred in either Anti-A or Anti-B, indicating blood type O. However, the question asks which blood samples show agglutination, and the table suggests that agglutination is being observed.

Given the context, the correct answer is A: Anti-A, as it is the only option directly related to the provided data and the question about agglutination.

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