🩸⚕️🅰️🅱️🅾️

#ABO blood group #blood transfusion #serology #blood compatibility

🩸🅰️🅱️🅾️🏦

#blood types #blood group #blood inventory #blood management #transfusion matching #blood compatibility

❤️🅰️🅱️🅾️(🆎)±

#ABO Rh system #blood typing #rh factor #positive blood type #negative blood type #blood compatibility #universal donor #universal recipient