Finally, array GSM40817 was hybridized with respiratory syncytial virus. The results are again shown in Table 3 , but for this array only, they have not been filtered on mean normalized intensity. Human herpesvirus 5 has by far the smallest p value of any of the virus groups; however, it also has a very small mean normalized log ratio. The correct hit, respiratory syncytial virus, has the second smallest p value, but has a much larger mean normalized log ratio. This represents the final class of result seen by DetectiV, where the correct virus group does not have the smallest p value, but does have a much larger mean normalized log ratio than those groups that have smaller p values. The small p value of respiratory syncytial virus combined with the large mean normalized log ratio identifies respiratory syncytial virus as the only infectious agent. In this instance, human herpesvirus 5 is represented by 241 oligos, 167 of which are greater than the global median, but all of which have intensities less than 1,000. This could be due to the oligos for human herpesvirus 5 having distant homology with the infectious agent or host cell.