They make up the cardiac pacemaker, that is, the natural pacemaker of the heart. In most humans, the concentration of pacemaker cells in the sinoatrial (SA) node is the natural pacemaker, and the resultant rhythm is a sinus rhythm. Sometimes an ectopic pacemaker sets the pace, if the SA node is damaged or if the electrical conduction system of the heart has problems.
Use IE Tab for Chrome. The best way to use Java (or Silverlight, or other NPAPI-based technologies) going forward is to use IE Tab for Chrome. You can set up Auto URLs to automatically open certain urls using IE Tab, providing a seamless experience, as if Java support never went away. Get it here:
Do you develop a desktop Java Swing application and need a component that could display all modern web pages including Flash and Ajax? In this case JxBrowser library is what you need. JxBrowser gives you a possibility to embed a rich web browser component into your Swing-based Java desktop applications. So web documents, inside your application will look exactly like in a web browser that they are designed for. JxBrowser supports integration with Internet Explorer and Mozilla (corresponding Firefox 3) under Windows, Apple Safari and Mozilla under Mac OS X, and Mozilla under Linux platforms. That's it!