Figure 1From: Occult Hepatitis B virus infection Among blood donors in ColombiaHBV ORF S detection in serum samples from blood donors with serologic profile HBsAg-/anti-HBc+. Amplification of small region ORS S (nt 422 to nt 758). MW: molecular weight marker, PC: Positive control serum sample (viral load 50000 IU/mL), NC: negative control PCR 1st and 2nd round, bp: base pairs.Back to article page