It is important to note that despite the variation in average probe intensities for the individual strains against probe set hav1Cb (Fig. 5) , the information as presented cannot be used to identify actual target nucleotide Fig. (4) . Hybridization profile of wild-type HAV HM175 strain target: average probe intensity. The hybridization data (normalized probe intensities) for HAV HM175 from Fig. (3) was converted to average probe intensities [15] and plotted vs each individual probe set. A given probe set represents all probes derived from their respective sequence group.