The author is in the Division of Microbiology, School of Biochemistry and Molecular Biology, University of Leeds, LS2 9JT, UK. E-mail: j.heritage{at}leeds.ac.uk
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Science 23 May 2003: Vol. 300, Issue 5623, pp. 1243-1244 DOI: 10.1126/science.1085576
John Heritage
The author is in the Division of Microbiology, School of Biochemistry and Molecular Biology, University of Leeds, LS2 9JT, UK. E-mail:
The author is in the Division of Microbiology, School of Biochemistry and Molecular Biology, University of Leeds, LS2 9JT, UK. E-mail: j.heritage{at}leeds.ac.uk