B cell receptor
A B-cell receptor (BCR) is a protein found on the surface of B cells, a type of white blood cell that plays a crucial role in the immune system. It functions like a sensor that recognizes specific substances, called antigens, such as bacteria or viruses. When a BCR binds to an antigen, it triggers the B cell to activate and produce antibodies, which are proteins designed to neutralize or destroy the pathogens. This process helps the body defend against infections and is key to developing immunity.
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B cell receptors (BCRs) are specialized proteins on the surface of B cells, a type of white blood cell crucial for the immune system. They function like "antennae" that detect specific foreign substances, known as antigens, such as bacteria or viruses. When a BCR binds to its target antigen, it triggers the B cell to activate, multiply, and produce antibodies. These antibodies are proteins that can neutralize pathogens or mark them for destruction by other immune cells, playing a vital role in defending the body against infections and diseases.