Institution: | (1) School of Animal and Microbial Sciences, University of Reading, Whiteknights, PO Box 228, Reading RG6 6AJ, UK e-mail: s.m.shimeld@reading.ac.uk Tel.: +44-118-9875123 ext. 7084, Fax: +44-118-9310180, GB;(2) Max-Planck-Institut für Molekulare Genetik, 14195 Berlin-Dahlem, Germany, DE |