Hi, Does anyone know of a reference for a volcano plot. Cheers Anthony -- ______________________________________________ Anthony Bosco PhD Student Institute for Child Health Research (Company Limited by Guarantee ACN 009 278 755) Subiaco, Western Australia, 6008 Ph 61 8 9489 7843 , Fax 61 8 9489 7700 email anthonyb at ichr.uwa.edu.au