The presence of the Rhesus (Rh) protein on red blood cells indicates a person has Rh-positive blood. The Rh factor is a specific protein found on the surface of red blood cells and is an essential component in determining blood type. For example, someone with type A blood who has the Rh protein is classified as A-positive (A+), while someone without it is A-negative (A-).
This protein plays a crucial role in medical settings, especially during blood transfusions and pregnancy. Rh compatibility is vital; if an Rh-negative person receives Rh-positive blood, it can trigger an immune reaction. Similarly, an Rh-negative mother carrying an Rh-positive baby may require medical intervention to prevent complications. Understanding Rh status ensures safe medical care.