Antibody-Antigen | Commonly Confused Words
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Master confusing words with ease

Antibody vs. Antigen

Antibody

A substance produced by the body to fight infections and diseases by targeting harmful invaders like bacteria and viruses

Examples:

Antibodies help neutralize toxins in the bloodstream.Doctors measure antibody levels to assess immunity.The vaccine stimulates antibody production in the body.

Synonyms:

Antonyms:

Antigen

A substance that triggers an immune response in the body, usually by producing antibodies.

Examples:

The vaccine helps your body recognize the antigen.Scientists study antigen responses to understand immunity.Antigen exposure can trigger immune system reactions.

Synonyms:

Antonyms:

Ways to tell them apart:

etymology
  • Antibodies are produced by the immune system, while antigens are substances that cause the immune system to produce these antibodies.
  • Antibodies help to identify and neutralize pathogens like bacteria and viruses, whereas antigens are the specific targets of these antibodies.
  • You can remember antibodies because they bind to antigens as their job, whereas antigens are the ones that trigger the immune response.
  • Antibodies circulate in the bloodstream, while antigens can be toxins, part of the pathogen, or any foreign particle.
  • Think of antibodies as the defense soldiers and antigens as the invaders or triggers for these soldiers.
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