Fig. 4.

Interleukin-15 mRNA expression in liver biopsy samples of chronic hepatitis C patients. a The IL-15 transcripts were amplified from the liver biopsy samples of six patients by reverse-transcription PCR. DEPC-treated water was used as the negative control. lanes 1–6; liver biopsy samples, lane 7; negative control, M; DNA marker. b Expression levels of IL-15 and the β-actin gene were quantified by reverse-transcription real-time PCR. The IL-15 mRNA expression level was adjusted to the β-actin mRNA expression level