Microarray-Based Diagnosis of FMDV. DNA microarrays are becoming increasingly useful for the analysis of gene expression and single nucleotide polymorphisms (SNPs) [199] [200] [201] . The application to discriminate among variants of FMDV is added to a number of microarray procedures used in virology to analyze multiple viral pathogens that belong to different virus families [202] , to detect specific viruses [203, 204] or to define genetic variations undergone by viruses [205, 206] .