To learn about the use and structure of the thesaurus employed to index articles added to the PubMed database, take a look at the 2013 Medical Subject Headings (MeSH) Now Available.    Become familiar with the MeSH Browser which contains a complete record of information related to a MeSH term, including previous indexing for the concept.  Some of the new MeSH terms added for 2013 are: Biopsy, Large-Core Needle, Buschke-Lowenstein Tumor, Dermatologic Surgical Procedures, Image-Guided Biopsy, MCF-7 Cells.  For a complete list of the new terms added to the MeSH vocabulary for 2013, click here.