| PAOD | peripheral arterial occlusive disease; peripheral arteriosclerotic occlusive disease |
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| PBL | peripheral blood leukocyte; peripheral blood lymphocyte; problem-based learning |
| PBM | peak bone mass; peripheral basement membrane; peripheral blood mononuclear [cell]; placental basemen... |
| PN | papillary necrosis; parenteral nutrition; penicillin; perceived noise; percussion note; periarteriti... |
| PNM | perinatal mortality; peripheral dysostosis, nasal hypoplasia, and mental retardation [syndrome]; per... |
| peripheral blood stem cell transplantation | A procedure that is similar to bone marrow transplantation. Doctors remove healthy immature cells (stem cells) from a patient's blood and store them before the patient receives high-dose chemotherapy and possibly radiation therapy to destroy the leukaemia cells. The stem cells are then returned to the patient, where they can produce new blood cells to replace cells destroyed by the treatment. (12 Dec 1998) |
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| peripheral cataract | A cataract in which the opacity affects the cortex of the lens. Synonym: peripheral cataract. (05 Mar 2000) |
| peripheral chemoreceptor | The chemoreceptor's in the carotid and aortic bodies that are stimulated by chemical changes in the composition of the blood such as hypoxia. (05 Mar 2000) |
| peripheral dysostosis | Dysostosis of the metacarpals and metatarsals, accompanied by variable facial features; possibly autosomal dominant inheritance. (05 Mar 2000) |
| peripheral facial paralysis | A condition that involves the facial nerve (VII cranial nerve) and results in the paralysis of one side of the face. Bell's (facial nerve palsy) can be differentiated from a central (stroke) deficit by the inability to raise the eyebrow on the affected side. (27 Sep 1997) |
| peripheral glare | Glare occurring when the surrounding brightness is greater than the brightness of the object of attention. (05 Mar 2000) |
| peripheral lymphoid tissue | Secondary lymphoid tissue, not necessarily located peripherally. See: lymphoid tissue. (18 Nov 1997) |
| peripheral membrane protein | <protein> Membrane proteins that are bound to the surface of the membrane and not integrated into the hydrophobic region. Usually soluble and were originally thought to bind to integral proteins by ionic and other weak forces (and could therefore be removed by high ionic strength, for example). However, it is now clear that some peripheral membrane proteins are covalently linked to molecules that are part of the membrane bilayer (see acylated proteins and glypiation) and that there are others that fit the original definition but are perhps more appropriately considered proteins of the cytoskeleton (e.g. Band 4.1 and spectrin) or extracellular matrix (e.g. Fibronectin). (18 Nov 1997) |
| peripheral nerves | The nerves outside of the brain and spinal cord, including the autonomic, cranial, and spinal nerves. Peripheral nerves contain non-neuronal cells and connective tissue as well as axons. The connective tissue layers include, from the outside to the inside, the epineurium, the perineurium, and the endoneurium. (12 Dec 1998) |
| peripheral nervous system | One of the two major divisions of the nervous system. Nerves in the PNS connect the central nervous system (CNS) with sensory organs, other organs, muscles, bloodvessels and glands. (22 May 1997) |
| peripheral nervous system agents | Drugs that act principally at one or more sites within the peripheral neuroeffector systems, the autonomic system, and motor nerve-skeletal system. (12 Dec 1998) |
| peripheral nervous system diseases | Diseases of the peripheral nervous system, including disorders of the peripheral autonomic system, the cranial nerves, and the spinal nerves and roots, but not including neuromuscular and spinal cord diseases. (12 Dec 1998) |
| peripheral neuropathy | <neurology> Injury to the nerves that supply sensation to the arms and legs. Origin: Gr. Pathos = disease (16 Dec 1997) |
| peripheral ossifying fibroma | A reactive focal gingival overgrowth derived histogenetically from cells of the periodontal ligament and usually developing in response to local irritants (plaque and calculus) on associated teeth; consists microscopically of a hyperplastic cellular fibrous stroma supporting deposits of bone, cementum, or dystrophic calcification. (05 Mar 2000) |
| peripheral protein | <protein> A water-soluble protein that is loosely bound (by hydrogen bonds orelectrostatic forces) to a membrane. (09 Oct 1997) |