- Association of interleukin-15-induced peripheral immune activation with hepatic stellate cell activation in persons coinfected with hepatitis C virus and HIV. Allison, R.D., Katsounas, A., Koziol, D.E., Kleiner, D.E., Alter, H.J., Lempicki, R.A., Wood, B., Yang, J., Fullmer, B., Cortez, K.J., Polis, M.A., Kottilil, S. J. Infect. Dis. (2009)