The immune system has evolved over the course of human evolution to be an incredibly complex and diverse system, which recognizes and specifically responds to disease. The immune system responds to disease by creating antibodies, which identify and neutralize disease. Each person has the potential to produce billions of different antibodies. The amount of information contained in the variable region of a single antibody is quite large, allowing very specific recognition of diseases or even disease states. This amplification process is extremely rapid: an activated B cell produces thousands of antibodies per minute with a lifespan of up to a few months.
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