| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
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| PV | pancreatic vein; papillomavirus; paraventricular; paravertebral; pemphigus vulgaris; peripheral vasc... |
| IC | icteric, icterus; immune complex; immunoconjugate; immunocytochemistry; immunocytotoxicity; impedanc... |
| ICSH | International Committee for Standardization in Hematology; interstitial cell-stimulating hormone |
| ICT | icteric, icterus; indirect Coombs test; inflammation of connective tissue; insulin coma therapy; int... |
| bean-shaped plasma | <radiobiology> A toroidal plasma indented on the inboard side (the side with the donut hole), that results in additional stability to ballooning modes. Moderate indentation may provide access to the second-stability region (high beta). (13 Nov 1997) |
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| blood plasma | <haematology> Acellular fluid in which blood cells are suspended. Serum obtained by defibrinating plasma (plasma derived serum) lacks platelet released factors and is less suitable to support the growth of cells in culture. (13 Oct 1997) |
| blood plasma fractions | Portions of the blood plasma as separated by electrophoresis or other technique. (05 Mar 2000) |
| rapid plasma reagin | <investigation> The rapid plasma reagin test is similar to the VDRL test for diagnosing syphilis. This blood test is designed to detect an antibody substance in the bloodstream when syphilis infection is present. Early syphilis infections may be RPR negative. See: VDRL (17 Dec 1997) |
| rapid plasma reagin test | A group of serologic test's for syphilis in which unheated serum or plasma is reacted with a standard test antigen containing charcoal particles; positive test's yield a flocculation. A modification, called the RPR (circle) card test, is widely used as a screening test. Synonym: RPR test. (05 Mar 2000) |
| renal plasma flow | <physiology> The amount of plasma that perfuses the kidneys per unit time, approximately 10% greater than effective renal plasma flow. It should be differentiated from the renal blood flow which refers to the total volume of blood flowing through the renal vasculature, while the renal plasma flow refers to the rate of plasma flow. (12 Dec 1998) |
| peak plasma drug concentration | <pharmacology> The highest level of drug that can be obtained in the blood usually following multiple doses. (09 Oct 1997) |
| collisionless plasma model | <radiobiology> Model of a plasma in which the density is so low, or the temperature so high, that close binary (two-body) collisions have practically no significance (on certain timescales) because the time scales of interest are shorter than the collision time. Yields valid physical results for timescales much shorter than the average collision time in a real plasma. (09 Oct 1997) |
| plasma | <haematology> Acellular fluid in which blood cells are suspended. Serum obtained by defibrinating plasma (plasma derived serum) lacks platelet released factors and is less suitable to support the growth of cells in culture. (13 Oct 1997) |
| plasma accelerator globulin | <chemical> Heat- and storage-labile plasma glycoprotein which accelerates the conversion of prothrombin to thrombin in blood coagulation. Factor v accomplishes this by forming a complex with factor xa, phospholipid, and calcium (prothrombinase complex). Deficiency of factor v leads to owren's disease. Chemical name: Blood-coagulation factor V (12 Dec 1998) |
| plasma albumin | <protein> The serum level of the low molecular protein albumin. Albumin, produced by the liver, plays an important role in maintaining plasma oncotic pressure. Normal serum albumin should be 3.5-5.0 grams per decilitre. Low serum albumin can be found in cases of liver disease and malnutrition. (27 Sep 1997) |
| plasma cells | Special white blood cells that produce antibodies. (12 Dec 1998) |
| plasma containment | <physics> In physics experiments or nuclear fusion experiments, operation is intended to prevent, in an effective and sufficiently prolonged manner, the particles of a plasma from striking the walls of the container in which this plasma is produced. Plasma confinement is a fundamental requirement for obtaining net energy from a fusion plasma. The reason is that scattering (hence diffusion) is at least an order of magnitude more probable than fusion reactions. Hence, without confinement, the plasma fuel would disperse before enough fusion reactions could take place. (31 Dec 1997) |
| plasma exchange | Removal of plasma and replacement with various fluids, e.g., fresh frozen plasma, plasma protein fractions (ppf), albumin preparations, dextran solutions, saline. Used in treatment of autoimmune diseases, immune complex diseases, diseases of excess plasma factors, and other conditions. (12 Dec 1998) |
| plasma expander | Artificial plasma extender. (18 Nov 1997) |