Blood Types: ABO System, Red Blood Cell Antigens & Blood Groups

Blood types A, B, AB, and O form the ABO blood group.Your ABO ... | Filo

In the ABO system, blood group O is characterised by

Type O Blood: O and O- Blood Types - Bloodworks Northwest

Understanding Blood Types ( Video ) | Biology

Is Rh-Negative Blood Alien in Origin? | Gaia

How Does the Rh Factor Affect Pregnancies? | Britannica

Blood Type Genotypes | Characteristics, Inheritance & Transfusion

Rhesus Factor