Step 1: Define Antitoxin
An antitoxin is a substance, typically an antibody, that neutralizes toxins produced by bacteria or other harmful organisms in the body. These toxins can cause harm to the cells and tissues.
Step 2: Role of Antitoxin
Antitoxins bind to the toxin molecules, preventing them from entering cells or damaging tissues. They are produced by the immune system in response to infections.
Final Answer:
Antitoxins are antibodies that neutralize harmful toxins produced by bacteria and prevent them from causing cellular damage.