A normal blood clot consists of a clump of blood-born particles that have become stuck together inside a blood vessel; this usually occurs at the site of a blood vessel injury and is part of the normal healing process.
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PME may refer to: Particle mesh Ewald, an algorithm used in calculating electrostatic forces in molecular dynamics simulations in computational biology and physics. Physical Medium Entity, an abstract defined by the IEEE 802.3 standard. Pi Mu Epsilon, the U.S. national mathematics honor-society.