2009最新的期刊影响因子已经出来了，其中最高的是CA-CANCER J CLIN（74.575），nature 和science 分别为31.434，28.103；在影响因子100高中，综述类期刊首当其冲，年度综述就有好就个，nature的好几个子刊也在其中。和生命科学相关的很多。下面是影响因子top100期刊以及影响因子。
AbbreviatedJournalTitle Impact Factor
期刊名缩写 影响因子
PROG LIPID RES 11.237
HEPATOLOGY 11.355
J AM COLL CARDIOL 11.438
MASS SPECTROM REV 11.507
IMMUNOL REV 11.761
PSYCHOL REV 11.765
TRENDS ECOL EVOL 11.904
ANNU REV ENTOMOL 11.918
ANNU REV GENOM HUM G 12.029
REP PROG PHYS 12.09
EPIDEMIOL REV 12.13
ACCOUNTS CHEM RES 12.176
PLOS MED 12.185
Q REV BIOPHYS 12.188
MOL SYST BIOL 12.243
MOL PSYCHIATR 12.537
CURR OPIN CELL BIOL 12.543
PSYCHOL BULL 12.568
GASTROENTEROLOGY 12.591
MAT SCI ENG R 12.619
PLOS BIOL 12.683
ANNU REV GENET 12.78
SURF SCI REP 12.808
TRENDS NEUROSCI 12.817
BEHAV BRAIN SCI 12.818
BRIT MED J 12.827
DEV CELL 12.882
MOL CELL 12.903
MATER TODAY 12.929
LANCET INFECT DIS 13.165
LANCET ONCOL 13.283
TRENDS CELL BIOL 13.385
GENE DEV 13.623
NAT METHODS 13.651
ASTROPHYS J SUPPL S 13.99
TRENDS BIOCHEM SCI 14.101
NAT NEUROSCI 14.164
NEURON 14.17
LANCET NEUROL 14.27
ARCH GEN PSYCHIAT 14.273
NAT REV MICROBIOL 14.31
CIRCULATION 14.595
NAT CHEM BIOL 14.612
ANNU REV PHYS CHEM 14.688
CNS NEUROL DISORD-DR 14.75
J NATL CANCER I 14.933
J EXP MED 15.219
ADV PHYS 15.826
CELL METAB 16.107
ANNU REV PSYCHOL 16.217
CLIN MICROBIOL REV 16.409
J CLIN INVEST 16.559
B AM MUS NAT HIST 16.692
ALDRICHIM ACTA 16.733
PROG POLYM SCI 16.819
NAT PHYS 16.821
CELL STEM CELL 16.826
MICROBIOL MOL BIOL R 16.95
ANNU REV BIOPH BIOM 17.049
J CLIN ONCOL 17.157
CHEM SOC REV 17.419
ANN INTERN MED 17.457
NAT CELL BIOL 17.774
PROG MATER SCI 18.132
PHYS REP 18.522
ENDOCR REV 18.562
ANNU REV PHYSIOL 19.74
NAT NANOTECHNOL 20.571
IMMUNITY 20.579
ANNU REV PHARMACOL 21.561
PHARMACOL REV 21.936
ANNU REV PLANT BIOL 22.192
NAT BIOTECHNOL 22.297
ANNU REV CELL DEV BI 22.731
NAT MATER 23.132
CHEM REV 23.579
NAT REV GENET 24.185
CANCER CELL 24.962
NAT PHOTONICS 24.982
NAT IMMUNOL 25.113
ANNU REV ASTRON ASTR 25.826
NAT REV NEUROSCI 25.94
ANNU REV NEUROSCI 26.405
NAT MED 27.553
SCIENCE 28.103
LANCET 28.409
NAT REV DRUG DISCOV 28.69
NAT REV IMMUNOL 30.006
ANNU REV BIOCHEM 30.016
NAT GENET 30.259
NAT REV CANCER 30.762
CELL 31.253
NATURE 31.434
JAMA-J AM MED ASSOC 31.718
REV MOD PHYS 33.985
PHYSIOL REV 35
NAT REV MOL CELL BIO 35.423
ANNU REV IMMUNOL 41.059
NEW ENGL J MED 50.017
CA-CANCER J CLIN 74.575