1. 
   ion channels
   Gated, ion-selective glycoproteins that traverse membranes. The stimulus for channel gating can be a membrane potential, drug, transmitter, cytoplasmic messenger, or a mechanical deformation. Ion channels which are integral parts of ionotropic neurotransmitter receptors are not included. ... (12 Dec...
   Found op http://www.mondofacto.com/facts/dictionary?ion+channels
   
   

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