1 Scroll down to the bottom of the page and click the link labeled Get Add-ons to navigate to the Internet Explorer Gallery Add-ons webpage. 2  Select an add-on category from the list of options in the column or use the search engine to locate a particular add-on, extension or plug-in from the available options provided. Click the link labeled Find more toolbars and extensions, located in the lower-left corner of the dialog box, to be redirected to the Internet Explorer Gallery's webpage. 2  Scroll down to the bottom of the page and click the link labeled Get Add-ons to navigate to the Internet Explorer Gallery Add-ons webpage.
PDH may refer to: 1  Angiotensin-converting enzyme, an enzyme. 2  Plesiochronous digital hierarchy, a technology used in telecommunications networks.
Parathyroid hormone (PTH) is a polypeptide containing 84 amino acids that is secreted by the parathyroid glands after cleavage from preproparathyroid hormone (115 amino acids) to proparathyroid hormone (90 amino acids) to the mature hormone.