This illustration, a background of cardiac muscle cell (mitochondria blue; myofilaments, myofibrils, purple) with an overlay of a rectangle representing a cell (no plasmalemma distinctions on this box) showing some of the ion pumps that are responsible for homeostasis and function in cardiac muscle.  This was a cover submission to Journal of Biological Chemistry, years ago, and unfortunately I had two cover submissions for the same month…. this one lost to my other one (ha ha). That was a banner month for me. Two submissions to the same journal but I just wish that either one or the other of the first authors on those manuscripts would have opted to delay publication one month, as I thought this was a pretty good graphic.