Making Medicines. Not long ago, if you were diabetic, the insulin your doctor prescribed would have come from a pig. If you required human growth hormone, it would have come from human cadavers, a source that is costly, not to mention a little creepy. Now, these and other medicines can be made by specially-modified bacteria, called transgenic bacteria. These single-celled organisms have foreign genes along side their own DNA.
publication. n. 1. (Journalism & Publishing) the act or process of publishing a printed work. 2. (Journalism & Publishing) any printed work offered for sale or distribution. 3. the act or an instance of making information public. 4. (Law) the act of disseminating defamatory matter, esp by communicating it to a third person.
The cover of an issue of the open-access journal PLOS Biology, published monthly by the Public Library of Science. Periodical literature (also called a periodical publication or simply a periodical) is a published work that appears in a new edition on a regular schedule. The most familiar example is the magazine, typically published weekly, monthly, or as a quarterly.