O-negative Blood Group
As already mentioned, the O-negative blood group means absence of all of the three major antigens ("A", "B" and "Rh") on the red blood cells. It is important to note that there is no "O" antigen on the blood cells. The absence of antigens A and B is referred to as O blood group.
O-negative blood group is relatively rare and its prevalence varies among different races. Around 7-8% of the Caucasian population will have O-negative blood group. However, only 1% of the Asian population will have O-negative blood group. Overall, around 5% of the world's population will have O-negative blood group.
O-negative Blood Group and Blood Donation
O-negative blood group is the "universal donor" blood group. This means that a person with any blood group can receive O-negative blood. This is very important in emergency situations when a person requires immediate blood transfusion and there is no time to test his/her blood group. Such person can be transfused an O-negative blood.
People with O-negative blood group can only receive O-negative blood. Therefore, occasionally it might be difficult to find O-negative blood for transfusing an O-negative person.
O-negative Blood Group and Personality Traits
It is believed in Japanese culture that a person's blood group determines his/her personality traits. O-negative persons are believed to be more self confident, loyal, competent and passionate. They are believed to have leadership qualities and are considered innovators and trend setters >:+)
