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Bodily fluids are liquids produced or excreted by the human body that carry nutrients, waste products, or other substances. They include blood, saliva, tears, sweat, mucus, semen, vaginal secretions, and various excretory fluids such as urine and bile. Each fluid is produced by specialized glands or tissues, and they serve distinct physiological functions. For example, blood transports oxygen and minerals, while sweat and tears help regulate temperature and protect ocular surfaces.
The composition of bodily fluids varies considerably. Blood contains plasma, red and white blood cells, platelets,
Medical professionals routinely analyze bodily fluids to diagnose and monitor disease. Blood tests reveal glucose levels,
In research, these fluids are valuable for biomarker discovery, pharmacokinetics, and personalized medicine. Advances in proteomics