Greetings I suppose a simple matter for R experts but for me... Am using GSA and have the GSA.obj (class GSA) created with GSA that contains the value ngenes visible with GSA.obj$ngenes And I have the list object (class list) created with GSA.listsets that contains Table of negative sets with score, p and FDR Table of positive sets with same But the list object does not contain ngenes. How do I manipulate ngenes into the list? Suggestions appreciated. Thank you. -- Loren Engrav, MD Professor and Chief, Plastic Surgery, 1977-2001 Associate Director, Burn Center, 1977-2001 Univ Washington Seattle [[alternative HTML version deleted]]