"...The initial DNA test result that helped convict Durham was proven to have been a false positive. The error arose from mis- interpretation. The laboratory had failed to completely separate male from female DNA during differential extraction of the semen stain. The victim’s alleles, when combined with those of the true rapist, produced an apparent genotype that matched Durham’s. The laboratory mistook this mixed profile for a single source result, and thereby falsely incriminated an innocent man..."