humoral

/ˈhjuːmərəl/
adjective
  1. Relating to body fluids, especially in the context of the immune system (e.g., humoral immunity involves antibodies in the blood).
    • Doctors studied the patient's humoral factors to understand the disease.
    • Humoral immunity is mediated by antibodies produced by B cells.
    • The humoral response helps fight off bacterial infections.
  2. Relating to the ancient medical theory of the four humors (blood, phlegm, black bile, yellow bile) that were believed to control health and temperament.
    • Ancient doctors believed that a humoral imbalance caused illness.
    • Hippocrates wrote about humoral pathology in his medical texts.
    • The theory of humoral medicine influenced treatments for centuries.
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