A substance that triggers an immune response, found on the surface of red blood cells.

A protein found on red blood cells that can be either present (positive) or absent (negative).

A facility or repository where donated blood is stored, processed, and made available for transfusions when needed.

The process of transferring blood or blood products from one person to another.

A coordinated event to collect blood donations for hospitals or emergency situations.

A person with blood type AB+, who can receive blood from any other blood type.

A rare and highly sought-after blood type that is considered the universal donor for emergency transfusions. It can be given to individuals of any other blood type.

The classification of blood based on the presence of antigens (A, B, AB, O).

A location where individuals can go to donate blood, either as part of a scheduled blood drive or on a regular basis.

How the Rh factor can impact pregnancy, especially in Rh-negative mothers and Rh-positive babies.

A protein in the blood that attacks foreign antigens, helping to prevent incompatible blood transfusions.

The act of giving blood for transfusion to those in need, often during emergencies or for medical procedures.