See Also: periblem(medicine)
periblem(dictionary)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
killer(dictionary)
killer(medicine)
nine-killer(medicine)
killer plasmid(medicine)
killer whale(encyclopedia)
Killer bees(money)

killer cell (medicine) and periblem (medicine)


killer cell (medicine)


killer cell


1. <immunology> Mammalian cells which can lyse antibody coated target cells. They have a receptor for the Fc portion of IgG and are probably of the mononuclear phagocyte lineage, though some may be lymphocytes. Not to be confused with cytotoxic T-cells which recognise targets by Other means and are clearly a sub set of T lymphocytes. This confusion exists in the early literature.

2. Natural killer cell are CD3 negative large granular lymphocytes, mediating cytolytic reactions that do not require expression of Class I or II major histocompatibility antigens on the target cell.

3. Lymphokine activated killer cells are NK cells activated by interleukin-2 (LAK cells).


periblem (medicine)


periblem
<botany> Nascent cortex, or immature cellular bark.

Origin: Pref. Peri- + root of Gr. To sprout.

Source: Websters Dictionary