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Making Vaccines

The vaccine is made from an antigen isolated or produced from the disease-causing microorganism. The vaccine is injected into the blood stream. The B cells in the blood stream respond to the antigen by producing antibodies. The antibodies bind to the antigen to "neutralize"or inactivate it. In addition, memory cells are produced and remain ready to mount a quick protective immune response against subsequent infection with the same disease causing agent.

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