Football transfer gossip as the January window opens: Man City and Bournemouth have reached an agreement in principle over the transfer of Antoine Semenyo; Enzo Maresca stormed out of Stamford Bridge ...

Department of Chemistry and Chemical Biology, Cornell University, Baker Laboratory, Ithaca, New York 14853-1301, and Department of Plant Pathology, University of WisconsinMadison, 1630 Linden Drive, ...