Ursula Jakob

Department of Biology, University of Michigan, Ann Arbor, Michigan, USA

Received 9/9/96; Accepted 9/10/96; On-line 10/1/96

4. ACKNOWLEDGMENTS

I thank Johannes Buchner and James Bardwell for many stimulating discussions and for critically reading the manuscript. I also thank David Smith for providing me with Figure 1. The work is supported by a fellowship of the Deutsche Forschungsgemeinschaft (DFG).