1. pubmed http://www.ncbi.nlm.nih.gov/
2. Science Magazine http://www.sciencemag.org/
3. Science Magazine Signal Transduction http://stke.sciencemag.org/
4. Science Magazine Functional Genomics http://www.sciencemag.org/feature/plus/sfg/
5. Plos Open Action Journal http://medicine.plosjournals.org/perlserv/?request=index-html&issn=1549-1676