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ON THE COVER
Image (provided by Bob L. Shepherd/Photo Researchers, Inc.) shows an illustration of the electrical activity that keeps the heartbeat steady. Electrical impulses pass from the atria to the ventricles via connexin proteins, which are held in place at cell junctions by the Coxsackievirus adenovirus receptor (CAR). CAR loss disrupts the connexin connections and leads to cardiac arrythmia. Related story by Lisewski et al.
See page 2369
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