Physiology · Immune System · Easy
Antigen
Meaning: A substance, usually a protein, that the immune system recognises and can generate antibodies against.
In practice: A rapid test detects viral antigen in a nasal swab.
Word parts
- anti- means against
Many medical words are built from Greek and Latin parts like these, so learning a few helps you work out new terms.
Quick check
Two questions on related physiology words.
Which word means: An increase in the depth and rate of breathing to meet metabolic demand, such as during exercise.
Answer: Hyperpnoea
Which word means: A natural opioid-like peptide released in the brain that reduces pain and produces feelings of wellbeing.
Answer: Endorphin
Words like antigen come up in the daily game
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