@matiullahdawlatzai: Blood Donor vs Recipient 🩸 Blood groups must match before transfusion. In the ABO blood group system, O− is the universal donor and AB+ is the universal recipient. Wrong matching can cause dangerous reactions, so compatibility is essential. #BloodGroup #Hematology #mrscientistzone #HealthEducation. #Matiullah

Matiullah Dawlatzai

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Tuesday 21 April 2026 13:55:44 GMT