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.
The three types of cells evaluated by the CBC include: White Blood Cells. There are five different types of WBCs, also called leukocytes, that the body uses to maintain a healthy state and to fight infections or other causes of injury.