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Plasticizers
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D010968 |
[Materials incorporated mechanically in plastics (usually PVC) to increase flexibility, workability or distensibility; due to the non-chemical inclusion, plasticizers leach out from the plastic and are found in body fluids and the general environment.
] |
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Plastics
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D010969 |
[Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
] |
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Plastids
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D018087 |
[Non-pigmented plastids.
, Self-replicating cytoplasmic organelles of plant and algal cells that contain pigments and may synthesize and accumulate various substances. PLASTID GENOMES are used in phylogenetic studies.
, Plastids containing carotenoid pigments.
, Plastids that store starch.
] |
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Plastination
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D000077780 |
[Preservation technique in which epoxy polymers are used to preserve tissue or an organ resulting in anatomically authentic dry specimens often used in teaching of anatomy.
] |
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Plastocyanin
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D010970 |
[A copper-containing plant protein that is a fundamental link in the electron transport chain of green plants during the photosynthetic conversion of light energy by photophosphorylation into the potential energy of chemical bonds.
] |
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Plastoquinol-Plastocyanin Reductase
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D050547 |
[A component of the CYTOCHROME B6F COMPLEX, this enzyme catalyzes the oxidation of plastoquinol-1 to PLASTOQUINONE.
] |
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Plastoquinone
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D010971 |
[Polyunsaturated side-chain quinone derivative which is an important link in the electron transport chain of green plants during the photosynthetic conversion of light energy by photophosphorylation into the potential energy of chemical bonds.
] |
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Platelet Activating Factor
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D010972 |
[A phospholipid derivative formed by PLATELETS; BASOPHILS; NEUTROPHILS; MONOCYTES; and MACROPHAGES. It is a potent platelet aggregating agent and inducer of systemic anaphylactic symptoms, including HYPOTENSION; THROMBOCYTOPENIA; NEUTROPENIA; and BRONCHOCONSTRICTION.
] |
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Platelet Activation
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D015539 |
[A series of progressive, overlapping events, triggered by exposure of the PLATELETS to subendothelial tissue. These events include shape change, adhesiveness, aggregation, and release reactions. When carried through to completion, these events lead to the formation of a stable hemostatic plug.
] |
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Platelet Adhesiveness
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D010973 |
[The process whereby PLATELETS adhere to something other than platelets, e.g., COLLAGEN; BASEMENT MEMBRANE; MICROFIBRILS; or other "foreign" surfaces.
] |
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Platelet Aggregation
|
D010974 |
[The attachment of PLATELETS to one another. This clumping together can be induced by a number of agents (e.g., THROMBIN; COLLAGEN) and is part of the mechanism leading to the formation of a THROMBUS.
] |
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Platelet Aggregation Inhibitors
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D010975 |
[Drugs or agents which antagonize or impair any mechanism leading to blood platelet aggregation, whether during the phases of activation and shape change or following the dense-granule release reaction and stimulation of the prostaglandin-thromboxane system.
] |
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Platelet Count
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D010976 |
[The number of PLATELETS per unit volume in a sample of venous BLOOD.
] |
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Platelet Endothelial Cell Adhesion Molecule-1
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D019408 |
[A cell adhesion molecule, composed of a series of Ig-like domains, and expressed on virtually all MONOCYTES; PLATELETS; and GRANULOCYTES. PECAM-1 is highly expressed on endothelial cells and concentrated at the junctions between them. It is essential for TRANSENDOTHELIAL MIGRATION of leukocytes and removal of apoptotic cells by PHAGOCYTES.
] |
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Platelet Factor 3
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D010977 |
[A phospholipid from the platelet membrane that contributes to the blood clotting cascade by forming a phospholipid-protein complex (THROMBOPLASTIN) which serves as a cofactor with FACTOR VIIA to activate FACTOR X in the extrinsic pathway of BLOOD COAGULATION.
] |
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Platelet Factor 4
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D010978 |
[A CXC chemokine that is found in the alpha granules of PLATELETS. The protein has a molecular size of 7800 kDa and can occur as a monomer, a dimer or a tetramer depending upon its concentration in solution. Platelet factor 4 has a high affinity for HEPARIN and is often found complexed with GLYCOPROTEINS such as PROTEIN C.
] |
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Platelet Function Tests
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D010979 |
[Laboratory examination used to monitor and evaluate platelet function in a patient's blood.
] |
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Platelet Glycoprotein GPIIb-IIIa Complex
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D019039 |
[Platelet membrane glycoprotein complex important for platelet adhesion and aggregation. It is an integrin complex containing INTEGRIN ALPHAIIB and INTEGRIN BETA3 which recognizes the arginine-glycine-aspartic acid (RGD) sequence present on several adhesive proteins. As such, it is a receptor for FIBRINOGEN; VON WILLEBRAND FACTOR; FIBRONECTIN; VITRONECTIN; and THROMBOSPONDINS. A deficiency of GPIIb-IIIa results in GLANZMANN THROMBASTHENIA.
] |
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Platelet Glycoprotein GPIb-IX Complex
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D019038 |
[Platelet membrane glycoprotein complex essential for normal platelet adhesion and clot formation at sites of vascular injury. It is composed of three polypeptides, GPIb alpha, GPIb beta, and GPIX. Glycoprotein Ib functions as a receptor for von Willebrand factor and for thrombin. Congenital deficiency of the GPIb-IX complex results in Bernard-Soulier syndrome. The platelet glycoprotein GPV associates with GPIb-IX and is also absent in Bernard-Soulier syndrome.
] |
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Platelet Membrane Glycoprotein IIb
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D040201 |
[Platelet membrane glycoprotein IIb is an integrin alpha subunit that heterodimerizes with INTEGRIN BETA3 to form PLATELET GLYCOPROTEIN GPIIB-IIIA COMPLEX. It is synthesized as a single polypeptide chain which is then postranslationally cleaved and processed into two disulfide-linked subunits of approximately 18 and 110 kDa in size.
] |
