IMMUNITY FLUIDS Crossword Clue
IMMUNITY FLUIDS Crossword Clue
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Crossword Puzzle Infos
Immunity fluids, also known as sera (4 letters), are bodily fluids that contain antibodies and other proteins that help the body fight off infections. They are produced by the immune system in response to foreign substances, such as bacteria or viruses, and can be used to treat diseases. Sera can also be used to create vaccines, which help protect people from future infections.