#abo-system
bloodtype What are the main types of human blood types and their significance?
There are four main blood types in humans: A, B, AB, and O. These blood types are determined by the presence or absence of specific antigens on the... Read more
favorite What is the most common blood type in humans?
Blood is a vital fluid in the human body that carries nutrients and oxygen to the organs and tissues and removes waste products from them. There are... Read more