Sorry for the incomplete e-mail. Annoying Microsoft Outlook Web App keyboard shortcuts are to blame. I wish universities had stuck to Mirapoint webmail. allGenes is : head(allGenes) DDX11L1 WASH7P MIR1302-2 FAM138A AL627309.2 OR4G11P FALSE FALSE FALSE FALSE FALSE FALSE Levels: FALSE TRUE table(allGenes) allGenes FALSE TRUE 57230 51