All-pairs design'. The figure is a schematic representation of the microarray design used for each cow (except cow 1419 which only had 2 intramammary bacterial infusions), where each arrow represents one microarray slide with the direction of the arrow indicating the cDNA labelling from Cy5 to Cy3-labelled cDNA.Copyright information:Taken from "Identification of immune genes and proteins involved in the response of bovine mammary tissue to infection"http://www.biomedcentral.com/1746-6148/4/18BMC Veterinary Research 2008;4():18-18.Published online 2 Jun 2008PMCID:PMC2430192.