WHAT ARE THE BLOOD TYPES
• A BLOOD TYPE IS A CLASIFICATION OF BLOOD
BASED ON THE PRESENCE AND ABSENCE OF
ANTIBODIES AND INHERITED ANTIGENS ON THE
SURFACE OF THE RED BLOOD CELLS
WHAT ARE THE TYPES OF BLOOD
THERE ARE TWO MAIN BLOOD GROUPS:
• ABO
• RH
WITH THESE TWO BLOOD SYSTEMS THERE ARE 8
BLOOD TYPES:
• O• O+
• A• A+
• B• B+
• AB• AB
ANTIGENS
SUBSTANCE THAT IS CAPABLE OF STIMULATING AN
IMMUNE
RESPONSE,
SPECIFICALLY
ACTIVATING
LYMPHOCYTES, WHICH ARE THE BODY’S INFECTIONFIGHTING WHITE BLOOD CELLS. IN GENERAL, TWO MAIN
DIVISIONS OF ANTIGENS ARE RECOGNIZED: FOREIGN
ANTIGENS (OR HETEROANTIGENS) AND AUTOANTIGENS
(OR SELF-ANTIGENS).
ANTIBODIES
A PROTECTIVE PROTEIN PRODUCED BY THE IMMUNE SYSTEM IN
RESPONSE TO THE PRESENCE OF A FOREIGN SUBSTANCE, CALLED
AN ANTIGEN. ANTIBODIES RECOGNIZE AND LATCH ONTO
ANTIGENS IN ORDER TO REMOVE THEM FROM THE BODY.
BLOOD TRANSFUSIONS