periarteriolar

peri·ar·te·ri·o·lar -är-.tir-ē-'ō-lər adj of, relating to, occurring in, or being the tissues surrounding an arteriole

Medical dictionary. 2011.

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  • Periarteriolar lymphoid sheaths — (or periarterial lymphatic sheaths, or PALS) are a portion of the white pulp of the spleen. They are populated largely by T cells.(This is in contrast to the lymphoid portions of the white pulp, where B cells predominate.)External links* * * *… …   Wikipedia

  • periarterial lymphatic sheath — periarteriolar lymphatic sheath, periarteriolar lymphoid sheath (PALS) any of the sheaths of lymphatic tissue surrounding the arteries that have left the splenic trabeculae; the sheaths are mainly composed of T lymphocytes, at intervals expanding …   Medical dictionary

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  • Immune system — A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and… …   Wikipedia

  • Bone marrow — Simplified illustration of cells in bone marrow. Latin medulla ossium Code TA …   Wikipedia

  • Pharyngeal tonsil — Location of the adenoid Latin tonsilla pharyngea MeSH …   Wikipedia

  • Lacrimal gland — Infobox Anatomy Name = PAGENAME Latin = glandula lacrimalis GraySubject = 227 GrayPage = 1028 Caption = Lacrimal apparatus of the right eye. The lacrimal gland is to the upper left. The right side of the picture is towards the nose. Caption2 =… …   Wikipedia

  • Cords of Billroth — The Cords of Billroth (also known as splenic cords or red pulp cords) are found in the red pulp of the spleen between the sinusoids, consisting of fibrils and connective tissue cells with a large population of monocytes and macrophages. These… …   Wikipedia

  • Reactive lymphocyte — surrounded by red blood cells. Reactive lymphocytes are lymphocytes that become large as a result of antigen stimulation. Typically they can be more than 30 µm in diameter with varying size and shape. The nucleus of a reactive lymphocyte can be… …   Wikipedia

  • Marginal zone — Transverse section of a portion of the spleen. Gray s subject #278 1284 The marginal zone …   Wikipedia

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