Hi again, Forgot to ask about how to calculate the Coefficient of variation for each gene... from the mean and SD mentioned in my previous mail... All the best!! // Anna :o) ********************************************************************** ********************* Anna Gustafsson Royal Institute of Technology AlbaNova University Center Stockholm Center for Physics, Astronomy and Biotechnology Department of Molecular Biotechnology 106 91 Stockholm, Sweden Phone (office): +46 8 553 783 41 Fax: + 46 8 553 784 81 Visiting adress: Roslagstullsbacken 21, Floor 3 Delivery adress: Roslagsv?gen 30B