Like, take, for instance, your pacemaker cells in your heart right now. They're keeping you alive. Every beat of your heart depends on this crucial region, the sinoatrial node, which has about 10,000 independent cells that would each
Como, por ejemplo, las células que marcan el paso de su corazón en este momento. Los mantienen vivos. Cada latido de su corazón depende de esta región crucial, el nodo sinusal,