Blood groups with easy trick.

 Here is the trick:

Universal Donor

Blood group O is a universal donor because those with type O blood do not have any antigens, they can donate blood to the persons of any group (A, B, AB, or O).

Universal Recipient

Blood group AB is a universal Acceptor because those with type AB blood can receive blood from any group, but cannot donate blood to any group other than AB, they are known as universal recipients.

Categories: Blood groups