Enchinococcus cysts, salmon roe, and pigeon egg whites neutralize which antibody?

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Multiple Choice

Enchinococcus cysts, salmon roe, and pigeon egg whites neutralize which antibody?

Neutralization of antibodies by soluble antigen is being tested here, specifically the anti-P1 antibody. Anti-P1 is a naturally occurring antibody in the P blood group system that targets the P1 antigen on red cells. Soluble P1 antigen is present in echinococcus cyst fluid, salmon roe, and pigeon egg whites. When serum containing anti-P1 is exposed to these substances, the antibodies bind the soluble P1 antigen and become blocked from reacting with P1 on red cells. This absorption or neutralization confirms the antibody’s identity because the antibody activity disappears after exposure to P1-containing material. The other antibodies have different targets and aren’t predictably neutralized by these particular substances, so this pattern specifically points to anti-P1.

Neutralization of antibodies by soluble antigen is being tested here, specifically the anti-P1 antibody. Anti-P1 is a naturally occurring antibody in the P blood group system that targets the P1 antigen on red cells. Soluble P1 antigen is present in echinococcus cyst fluid, salmon roe, and pigeon egg whites. When serum containing anti-P1 is exposed to these substances, the antibodies bind the soluble P1 antigen and become blocked from reacting with P1 on red cells. This absorption or neutralization confirms the antibody’s identity because the antibody activity disappears after exposure to P1-containing material. The other antibodies have different targets and aren’t predictably neutralized by these particular substances, so this pattern specifically points to anti-P1.

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