Donald Gullberg, Teet Velling, Lars Lohikangas, Carl-Fredrik Tiger

Department of Animal Physiology, Uppsala University, BMC, Box 596, S-751 24 Uppsala , Sweden

Received 9/7/98 Accepted 9/21/98

Dr. Donald E. Gullberg
Uppsala University
BMC, Box 596, S-571 24
Uppsala, Sweden

Tel: +46-18 471 4175
Fax: +46-18-508095
E-mail: Donald.Gullberg@zoofys.uu.se