Journal Impact Factors 2005 Journal Impact Factor is from Journal Citation Report (JCR), a product of Thomson ISI (Institute for Scientific Information). This is a subscription service provided by Thomson. The following list was compiled from data gathered from journal websites and Sci-Bytes. Rank Abbreviated Journal Title IF 1  CA-CANCER J CLIN 49.794 2 ANNU REV IMMUNOL 47.400 3 NEW ENGL J MED 44.016 4 ANNU REV BIOCHEM 33.456 5  NAT REV CANCER 31.694 6 SCIENCE 30.927 7 NAT REV IMMUNOL 30.458 8  REV MOD PHYS 30.254 9  NAT REV MOL CELL BIO 29.852 10 CELL 29.431 11 NATURE 29.273 12 NAT MED 28.878 13 PHYSIOL REV 28.721 14 NAT IMMUNOL 27.011 15 NAT GENET 25.797 16 ANNU REV NEUROSCI 24.184 17 ANNU REV CELL DEV BI 23.690 18 LANCET 23.407 19 JAMA-J AM MED ASSOC 23.332 20 NAT BIOTECHNOL 22.738 The complete list was removed from this website due to copy-right violations. A list of journal impact factor 2005 is available from: http://www.dote.hu/impact_factor.html