A universal donor has the blood group O negative (O-), because its red blood cells lack A, B, and Rh antigens, making them safe to give to any patient in emergencies, regardless of their own blood type.
A universal donor has the blood group _____?
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Question context
This question is part of 🦠 Microbiology within the broader 🧬 Medical Science subject and appears in the Education Testing Council by HEC preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.