The NLM Technical Bulletin dated March-April, 2008,  announces indexing coverage  for, and inclusion of 7 new journals, the most significant of which might beThe Journal of Cell Communication and Signaling and BMC Medical Physics.

NLM Technical Bulletin, Mar-Apr 2008, PubMed Central: New Journals Participating and New Content Added:   http://www.nlm.nih.gov/pubs/techbull/ma08/ma08_pmc.html