Figure 1From: Detection of Multiple Human Papillomavirus Genotypes in Anal CarcinomaDNA HPV Microarray of Human Anal Cancer. As explained in the Methods section, the yellow-green spots on the microarray indicate positive hybridization for HPV. This human anal cancer sample is positive for HPV-16 and HPV-33. Each HPV genotype is represented by two single-stranded oligonucleotide probes (i.e. forward and reverse complementary orientations).Back to article page