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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «B»:

  1. B cell B cell
    B cell: A type of white blood cell and, specifically, a type of lymphocyte. Many B cells mature into what are called plasma cells that produce antibodies (proteins) necessary to fight off infections while other B cells mature into memory B cells. All of the plasma cells descended from a single B...
  2. B variant GM2-gangliosidosis B variant GM2-gangliosidosis
    B variant GM2-gangliosidosis: See: Tay-Sachs disease....
  3. B virus B virus
    B virus: An infectious agent commonly found among macaque monkeys, including rhesus macaques, pig-tailed macaques, and cynomolgus monkeys. Monkeys infected with this virus usually have no or mild symptoms. In humans, however, B virus infection can result in a fatal encephalomyelitis. B virus disease...
  4. B(a)P B(a)P
    B(a)P: Benzo(a)pyrene....
  5. B-type natriuretic peptide B-type natriuretic peptide
    B-type natriuretic peptide: A 32-amino-acid polypeptide secreted by the ventricles of the heart in response to excessive stretching of myocytes (heart muscles cells) in the ventricles. The levels of B-type natriuretic peptide (BNP) are elevated in patients with left ventricular dysfunction. BNP lev...
  6. B. burgdorferi B. burgdorferi
    B. burgdorferi: Short for Borrelia burgdorferi, the cause of Lyme disease. Once the full name of a bacterium has been given, it is customary to refer to it in its short form. For example, "Borrelia burgdorferi...is responsible for Lyme disease, which can lead to debilitating symptoms in humans....Es...
  7. B. cepacia B. cepacia
    B. cepacia: See: Burkholderia cepacia....
  8. B. coli B. coli
    B. coli: The protozoan parasite Balantidium coli. See: Balantidium....
  9. B. quintana B. quintana
    B. quintana: Also called Rochalimaea quintana), Bartonella quintana is an unusual rickettsial organism that can multiply within the gut of the body louse and then can be transmitted to humans. Transmission to people can occur by rubbing infected louse feces into abraded (scuffed) skin or into the c...
  10. b.i.d. (on prescription) b.i.d. (on prescription)
    b.i.d. (on prescription): Seen on a prescription, b.i.d. means twice (two times) a day. It is an abbreviation for "bis in die" which in Latin means twice a day. The abbreviation b.i.d. is sometimes written without a period either in lower-case letters as "bid" or in capital letters as "BID". Ho...
  11. Ba Ba
    Ba: The symbol for barium....
  12. Babesiosis Babesiosis
    Babesiosis: An illness caused by the parasite Babesia which is transmitted from animals to humans by ticks. In the US, it is typically contracted in the Northeast or Midwest -- in southern New England or New York State and in Wisconsin or Minnesota. The signs and symptoms include fever, chills, swea...
  13. Babinski reflex Babinski reflex
    Babinski reflex: An important neurologic test based, believe it or not, upon what the big toe does when the sole of the foot is stimulated. If the big toe goes up, that may mean trouble. The Babinski reflex is obtained by stimulating the external portion (the outside) of the sole. The examiner be...
  14. Babinski response Babinski response
    Babinski reflex: An important neurologic test based, believe it or not, upon what the big toe does when the sole of the foot is stimulated. If the big toe goes up, that may mean trouble. The Babinski reflex is obtained by stimulating the external portion (the outside) of the sole. The examiner be...
  15. Babinski sign Babinski sign
    Babinski sign: An important neurologic examination based upon what the big toe does when the sole of the foot is stimulated. If the big toe goes up, that may mean trouble. The Babinski sign is obtained by stimulating the external portion (the outside) of the sole. The examiner begins the stimulat...