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  • PX

    Medical abbreviation for prognosis.

  • Cerebrovascular accident

    The term “stroke” reflects the belief among the ancient Greeks and Romans that someone suffering a stroke (or any sudden incapacity) had been struck down by the gods.

  • GFAP

    Glial fibrillary acidic protein. The degenerative brain condition called Alexander disease is caused by mutation in GFAP (glial fibrillary acidic protein). The GFAP gene provides instructions for making GFAP protein, a member of the intermediate filament family that provides support and strength to cells. Several molecules of GFAP protein bind together to form the main […]

  • Lead-based paint

    Paint or other surface coatings that, by definition, contain lead in excess of 1.0 milligrams per square centimeter (mg/cm2) 0.5 percent by weight. See also lead poisoning.

  • Y-linked inheritance

    ASMTY (which stands for acetylserotonin methyltransferase), TSPY (testis-specific protein), IL3RAY (interleukin-3 receptor), SRY (sex-determining region), TDF (testis determining factor), ZFY (zinc finger protein), PRKY (protein kinase, Y-linked), AMGL (amelogenin), CSF2RY (granulocyte-macrophage colony-stimulating factor receptor, alpha subunit on the Y chromosome), ANT3Y (adenine nucleotide translocator-3 on the Y), AZF2 (azoospermia factor 2), BPY2 (basic protein on […]

  • Sarcoma, Ewing

    A malignant tumor that arises in a primitive nerve cell within bone or soft tissue and affects children and adolescents, especially between ages 10 and 20. Ewing sarcoma usually appears in the large bones of the arms and legs and the flat bones of the pelvis, spine, and ribs. Treatments include chemotherapy, surgery, and radiation […]

  • Zinsser disease

    Also called Brill-Zinsser disease, recrudescence of epidemic typhus years after the initial attack. The agent that causes epidemic typhus (Rickettsia prowazekii) remains viable for many years and then when host defenses are down, it is reactivated causing recurrent typhus. The disease is named for the physician Nathan Brill and the great bacteriologist Hans Zinsser.

  • CA 19-9

    CA 19-9: A tumor marker initially found in colorectal cancer patients, but subsequently also identified in patients with pancreatic, stomach, and bile duct cancer. In those who have pancreatic cancer, higher levels of CA 19-9 tend to be associated with more advanced disease. Noncancerous conditions that may elevate CA 19-9 levels include gallstones, pancreatitis, cirrhosis […]

  • Split-hand/split-foot malformation

    A genetic malformation syndrome of the limbs with syndactyly, median clefts of the hands and feet, and aplasia (failure of development) and/or hypoplasia (underdevelopment) of the phalanges (the digits), the metacarpals (the bones leading up to the fingers), and the metatarsals (the bones leading up to the toes). The split-hand/split-foot malformation (SHFM) involves ectrodactyly (the […]

  • Ligament, anterior cruciate

    Anterior cruciate ligament.