Short form for polymorphonuclear leukocyte, a type of white blood cell.

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  • Polyarteritis nodosa

    An autoimmune disease that is characterized by spontaneous inflammation of the arteries (arteritis) and can affect any organ of the body. Polyarteritis nodosa most commonly affects muscles, joints, intestines, nerves, kidneys, and skin. Inflammation of the arteries can lead to inadequate blood supply and permanent damage to organs. Typically, polyarteritis nodosa is treated with medications […]

  • Polyarticular

    Involving many joints, as opposed to monoarticular (affecting just one joint).

  • Polyclonal

    Derived from different cells. As opposed to monoclonal.

  • Polycyclic aromatic hydrocarbon

    Abbreviated PAH. A hydrocarbon (a molecule made up of hydrogen and carbon) containing two or more closed rings of atoms. PAHs are persistent, bioaccumulative, and toxic (PBT) pollutant. Exposure usually occurs by breathing air contaminated by wild fires or coal tar, or by eating foods that have been grilled. Other sources include industrial processes, transportation, […]

  • Polycystic kidney disease

    Autosomal dominant polycystic kidney disease — also known as adult polycystic kidney disease. Autosomal recessive polycystic kidney disease — also known as juvenile polycystic kidney disease. Polycystic kidney disease can be diagnosed by ultrasound imaging and by CT or MRI scan. Treatment involves managing pain and treating infections, high blood pressure, and kidney failure.

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