15+ Why Are Type O Blood Universal Donors Pictures. Blood type represents four different classes of blood which are classified depending on the type of antigenic substances that are available on the blood cell membrane. O negative blood can be used in transfusions like eye color, blood type is passed genetically from your parents.
People with blood type o are considered to be universal donors. However, such persons can receive blood only from those persons who have blood group o. Although universal donor and universal recipient types are occasionally used to classify blood in an emergency, blood type tests are always done to prevent.
Antigens are proteins that are capable this blood type is considered the universal donor.
Hence, these can donate blood to anyone( universal donors). O+ is found in 38% of people, making it the most common blood. Type o blood is the called the universal donor because it has neither a nor b surface antigens on the red blood cells. But the donor's is o negative.