SciNav For Life Sciences
"The SciNav Open Bookmarklet allows new ways of accessing scientific web content: it uses semantic techniques to enrich web content with dynamic, up-to-date links to a wide variety of relevant further information.  SciNav identifies and highlights entities of significance in scientific text in your browser;  SciNav provides links to further information, including to open access literature. To install, drag [the bookmarklet] to the Bookmarks Bar of your browser (the Favorites Bar in Internet Explorer): To invoke the bookmarklet when you are on a page with scientific text (e.g. a journal article), simply click on SciNav in the Bookmarks Bar (or Favorites Bar). "