SsU antibodies appear in the presence of which deletion sequence?

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Multiple Choice

SsU antibodies appear in the presence of which deletion sequence?

Explanation:
SsU antibodies target the U antigen, which is carried by glycophorin B (GYPB) on red cells. If GYPB is deleted, the U antigen is not expressed, so individuals are U-negative and can form anti-U when exposed to U-positive cells. Therefore, the appearance of SsU antibodies is associated with a deletion of the GYPB gene.

SsU antibodies target the U antigen, which is carried by glycophorin B (GYPB) on red cells. If GYPB is deleted, the U antigen is not expressed, so individuals are U-negative and can form anti-U when exposed to U-positive cells. Therefore, the appearance of SsU antibodies is associated with a deletion of the GYPB gene.

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