by monitoring immunobiological parameters known to be influenced by interferon ( ifn ) , the natural killer ( nk ) cell activity of 10 low replication ( anti-hbe ) virus b-dna ( hbv-dna ) hepatitis patients receiving rifn alpha-a , of 5 anti-hbe/delta positive hepatitis patients treated with rifn alpha-2 , and of 6 high replication ( hbeag ) hbv-dna hepatitis patients on lymphoblastoid ifn was followed-up during therapy .
C0021747
interferon
C0011226
delta