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Table 1 Comparison of 2005 journal impact factors for general science and biology journals.

From: Journal of Biology celebrates its fifth anniversary

Journal

Impact factor

Launch date

Nature

32.2

1869

Science

30.9

1880

Cell

29.4

1974

PNAS

14.5

1915

Journal of Biology*

20.1 (predicted)

2002

PLoS Biology*

13.9

2003

Genome Biology*

9.7

1999

BMC Biology*

4.4 (predicted)

2003

  1. *Open access. The predicted impact factor is based on the number of times that research articles published in 2003 and 2004 were cited in 2005.