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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1975 1
1976 1
1983 1
1984 1
1985 2
1986 5
1987 12
1988 108
1989 301
1990 463
1991 646
1992 746
1993 921
1994 1098
1995 1518
1996 1637
1997 1874
1998 1964
1999 2328
2000 2504
2001 2469
2002 2688
2003 2951
2004 3086
2005 3145
2006 3007
2007 3354
2008 3585
2009 3864
2010 4221
2011 4566
2012 4830
2013 4948
2014 4279
2015 4267
2016 3961
2017 3656
2018 3340
2019 1371
2020 19
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76,145 results
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Page 1
Programmed Cell Death 1 (PD-1) and Cytotoxic T Lymphocyte-Associated Antigen 4 (CTLA-4) in Viral Hepatitis
Cho H, et al. Int J Mol Sci 2017 - Review. PMID 28703774 Free PMC article.
Virus-specific cluster of differentiation 8 (CD8+) cytotoxic T cells (CTL) recognize viral antigens presented on major histocompatibility complex (MHC) class I chains on infected hepatocytes, with help from CD4+ T cells. ...
Virus-specific cluster of differentiation 8 (CD8+) cytotoxic T cells (CTL) recognize viral antigens presented on major histoco …
T-cell regulation by CD28 and CTLA-4
Alegre ML, et al. Nat Rev Immunol 2001 - Review. PMID 11905831
76,145 results
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