I am using Agilent human CGH 44B for my research. Searching through http://www.bioconductor.org/packages/2.3/data/annotation/, I can't find the appropriate annotation package. Next, I found at http://rss.a cs.unt.edu/Rdoc/library/AnnBuilder/data/descriptionInfo.txt the following statment, which confused me. Does hgug4410b really exist ? I really need it for my work. hgug4410b Homo sapiens Human Agilent Human Genome CGH 44B http://www.chem.agilent.com/scripts/generic.asp?lpage=5175&indcol=N&pr odcol=Y AnnotationData Thanks Daren _________________________________________________________________ See all the ways you can stay connected to friends and family [[alternative HTML version deleted]]