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Publishers Clearing House. Publishers Clearing House (PCH) is a direct marketing company that markets merchandise and magazine subscriptions with sweepstakes, and prize-based games. Publishers Clearing House was founded in 1953 by Harold Mertz to replace door-to-door magazine subscription sales by a single vendor offering multiple subscriptions by mail.
Phosphocreatine, also known as creatine phosphate (CP) or PCr (Pcr), is a phosphorylated creatine molecule that serves as a rapidly mobilizable reserve of high-energy phosphates in skeletal muscle and the brain.hosphocreatine can anaerobically donate a phosphate group to ADP to form ATP during the first 2 to 7 seconds following an intense muscular or neuronal effort. Conversely, excess ATP can be used during a period of low effort to convert creatine to phosphocreatine.