@sanasmartstudy: *"Your blood type decides who can save you 🩸"* There are *4 main blood groups* based on antigens on RBCs. 1. *A - 40% people* Has *A antigen*. Can give to A + AB. _Trick: A gives to A_ 2. *B - 11% people* Has *B antigen*. Can give to B + AB. _Trick: B gives to B_ 3. *AB - 4% people* Has *A + B antigen*. Universal RECIPIENT 🫡 Can take from A, B, AB, O _Trick: AB = All Blood_ 4. *O - 45% people* Has *NO antigen*. Universal DONOR 🦸 Can give to A, B, AB, O _Trick: O = Only giver_ *Rh Factor:* + or - *O- = Universal Donor* | *AB+ = Universal Recipient* *Memory trick: O gives all, AB takes all* Which blood group are you? Comment 👇 #BloodGroup #Biology #ABO #ScienceTok #MedStudent