Ma et al., Immunology 2011
(Hepatitis C, Chronic) :
PD-1 negatively regulates interleukin-12 expression by limiting STAT-1 phosphorylation in monocytes/macrophages during chronic hepatitis C virus infection
Penaranda et al., Proc Natl Acad Sci U S A 2012
(Diabetes Mellitus, Type 1) :
Conversely, IL-7 suppressed PD-1 expression on activated T cells in vitro