English: The core loops of the circadian clock of mammals. PER=Period, CRY=Cryptochrome, BMAL1=Brain and Muscle ARNT-like 1 CK1d/e=Casein kinase 1 delta/epsilon. red arrows indicate inhibition and green ones indicate stimulation. The DNA molecule is by Michael Ströck and licensed under GFDL at Commons (DNA Overview.PNG).
Svenska: De viktigaste komponenterna i den biologiska klockan hos däggdjur. PER=Period, CRY=Cryptochrome, BMAL1=Brain and Muscle ARNT-like 1 CK1d/e=Casein kinase 1 delta/epsilon. Röda pilar indikerar hämning och gröna indikerar stimulering. DNA-molekyl av Michael Ströck (modifierad) (GFDL på Commons).
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{{Information |Description={{en|1=The core loops of the circadian clock of mammals. PER=Period, CRY=Cryptochrome, BMAL1=Brain and Muscle ARNT-like 1 CK1d/e=Casein kinase 1 delta/epsilon. red arrows indicate inhibition and green ones indicate stimulation.