In a blood sample antiserum A and antiserum B and Rh+ ve factor is added. No agglutination is seen. This is_______________?
Correct answer: D. O group and Rh- ve
- A. O group and Rh+ ve
- B. AB group and Rh - ve
- C. AB group and Rh+ ve
- D. O group and Rh- ve
Explanation
No agglutination with anti-A or anti-B indicates that the red cells lack A and B antigens, identifying group O. Lack of agglutination with anti-D indicates Rh-negative blood, giving O Rh-negative.
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