Occult Hepatitis B Infection among Hemodialysis Patients in Tabriz, Northwest of Iran: Prevalence and Mutations within the S Region

Table 2

Sequences and sizes of primers used for full-length hepatitis B surface protein.

Primers for HBV S-gene region	Nucleotide position (HBV)	Fragment size (bp)
First round
S1-F: 5′-CCTGCTGGTGGCTCCAGTTC-3′	[56–75]	1000
S2-R: 5′-CCACAATTCKTTGACATACTTTCCA-3′	[979–1003]
Second round
S6-F: 5′-GCACACGGAATTCCGAGGACTGGGGACCCTG-3′	[133–146]	700
S7-R: 5′-GACACCAAGCTTGGTTAGGGTTTAAATGTATACC-3′	[823–857]

HBV, hepatitis B virus; bp, base pair; F, forward strand; R, reverse strand.