Google "microarray database" and you will get several public microarray databases as the top hits: genome-www5.stanford.edu ihome.cuhk.edu.hk/~b400559/arraysoft_public.html www.med.yale.edu/microarray/ nciarray.nci.nih.gov/ https://genome.unc.edu/ Sometimes I wonder why people ask questions that can be answered in 10 seconds with an obvious Google search. One would think that a bioinformatics student would be aware of the value of asking queries of large databases. ------------------------------------------------------------ Kevin Karplus karplus at soe.ucsc.edu http://www.soe.ucsc.edu/~karplus Professor of Biomolecular Engineering, University of California, Santa Cruz Undergraduate and Graduate Director, Bioinformatics (Senior member, IEEE) (Board of Directors & Chair of Education Committee, ISCB) life member (LAB, Adventure Cycling, American Youth Hostels) Effective Cycling Instructor #218-ck (lapsed) Affiliations for identification only.