the occurrence rate of an unfavorable outcome as determined by histological evidence of cirrhosis was 6 % versus 44 % ( p less than 0.01 ) in carriers with active viral infection ( greater than 1 ng/ml of hbv-dna ) and in patients with absent or low levels of viral dna ( less than 1 pg/ml ) , respectively .
C0012854
dna
C0012939
viral dna