In the US, Eggs Are Refrigerated to Help Reduce Salmonella Risks. If an egg is infected with salmonella, the bacteria will multiply more quickly if the egg is stored at room temperature instead of in the refrigerator, particularly if they're stored for longer than 21 days. This is why, in the US, public health agencies advise keeping your eggs in the fridge.
Whole blood consists of 3 types of blood cells, suspended in a liquid called plasma. Blood circulates through the arteries and veins with each of the blood cell types -- red blood cells, white blood cells and platelets -- performing different functions throughout the body.
blood type. Any of the four main types into which human blood is divided: A, B, AB, and O. Blood types are based on the presence or absence of certain substances, called antigens, on red blood cells.Also called blood group.roup A, type A, A-the blood group whose red cells carry the A antigen. group B, type B, B-the blood group whose red cells carry the B antigen. group AB, type AB, AB-the blood group whose red cells carry both the A and B antigens.