For more information on the immune-inhibitory properties of HBsAg please refer to the following:
Cheng et al., 2005. Journal of Hepatology, 43:4 65-471
Op den Brouw et al., 2009. Immunology, 126: 280-289
Shi et al. 2012 PLoS ONE 7: e44900
Vanlandschoot et al., 2002. J. Gen. Virol., 83: 1281-1289
Woltman et al. 2011 PLoS ONE 6: e15324
Wu et al., 2009. Hepatology, 49: 1132-1140
Xu et al., 2009. Molecular immunology, 46: 2640-2646