Hi, Is the primer selection program osp available to go with the nice little interface? I've rooted about on ftp.wustl.edu but to no avail. Thanks Michele. -- Dr Michele Clamp , EMBL-European Bioinformatics Institute Hinxton, Cambs CB10 1SD, email : michele at ebi.ac.uk UK Tel: 01223 494682 Fax: 01223 494468