CHEN BENJAMIN J ET AL: "PD-L1 Expression Is Characteristic of a Subset of Aggressive B-cell Lymphomas and Virus-Associated Malignancies", CLINICAL CANCER RESEARCH, THE AMERICAN ASSOCIATION FOR CANCER RESEARCH, US, vol. 19, no. 13, 1 July 2013 (2013-07-01), pages 3462-3473, XP009177218, ISSN: 1078-0432 [retrieved on 2013-05-14] (B1)

DATABASE MEDLINE [Online] US NATIONAL LIBRARY OF MEDICINE (NLM), BETHESDA, MD, US; 2013, BIGELOW ELAINE ET AL: "Immunohistochemical staining of B7-H1 (PD-L1) on paraffin-embedded slides of pancreatic adenocarcinoma tissue.", XP002722587, Database accession no. NLM23328703 -& Elaine Bigelow ET AL: "Immunohistochemical staining of B7-H1 (PD-L1) on paraffin-embedded slides of pancreatic adenocarcinoma tissue.", Journal of visualized experiments : JoVE, 1 March 2013 (2013-03-01), XP055111169, Retrieved from the Internet: URL:http://www.jove.com/video/4059/immunoh istochemical-staining-b7-h1-pd-l1-on-paraf fin-embedded-slides [retrieved on 2014-04-01] (B1)

DING H ET AL: "PD-L1 is expressed by human renal tubular epithelial cells and suppresses T cell cytokine synthesis", CLINICAL IMMUNOLOGY, ACADEMIC PRESS, US, vol. 115, no. 2, 1 May 2005 (2005-05-01), pages 184-191, XP004879483, ISSN: 1521-6616, DOI: 10.1016/J.CLIM.2005.01.005 (B1)

DONG HUA: "B7-H1 expression is associated with expansion of regulatory T cells in colorectal carcinoma", WORLD JOURNAL OF GASTROENTEROLOGY, vol. 18, no. 9, 1 January 2012 (2012-01-01), page 971, XP055110548, ISSN: 1007-9327, DOI: 10.3748/wjg.v18.i9.971 (B1)

HOLGER KRÖNIG ET AL: "PD-1 expression on Melan-A-reactive T cells increases during progression to metastatic disease", INTERNATIONAL JOURNAL OF CANCER, vol. 130, no. 10, 11 January 2012 (2012-01-11), pages 2327-2336, XP055110549, ISSN: 0020-7136, DOI: 10.1002/ijc.26272 (B1)

HONG LI ET AL: "The characteristic expression of B7-associated proteins in Langerhans cell sarcoma", ACTA HISTOCHEMICA, ELSEVIER, AMSTERDAM, NL, vol. 114, no. 7, 21 December 2011 (2011-12-21), pages 733-743, XP028399033, ISSN: 0065-1281, DOI: 10.1016/J.ACTHIS.2011.12.010 [retrieved on 2012-01-12] (B1)

WU C ET AL: "Immunohistochemical localization of programmed death-1 ligand-1 (PD-L1) in gastric carcinoma and its clinical significance", ACTA HISTOCHEMICA, ELSEVIER, AMSTERDAM, NL, vol. 108, no. 1, 10 May 2006 (2006-05-10), pages 19-24, XP027962807, ISSN: 0065-1281 [retrieved on 2006-05-10] (B1)

JULES GADIOT ET AL: "Overall survival and PD-L1 expression in metastasized malignant melanoma", CANCER, vol. 117, no. 10, 29 November 2010 (2010-11-29), pages 2192-2201, XP055107383, ISSN: 0008-543X, DOI: 10.1002/cncr.25747 cited in the application (B1)

LIANCAI WANG ET AL: "Clinical Significance of B7-H1 and B7-1 Expressions in Pancreatic Carcinoma", WORLD JOURNAL OF SURGERY ; OFFICIAL JOURNAL OF THE INTERNATIONALSOCIETY OF SURGERY/SOCIÉTÉ INTERNATIONALE DE CHIRURGIE, SPRINGER-VERLAG, NE, vol. 34, no. 5, 10 February 2010 (2010-02-10), pages 1059-1065, XP019800514, ISSN: 1432-2323 (B1)

SHENG-JIA SHI ET AL: "B7-H1 Expression Is Associated with Poor Prognosis in Colorectal Carcinoma and Regulates the Proliferation and Invasion of HCT116 Colorectal Cancer Cells", PLOS ONE, vol. 8, no. 10, 4 October 2013 (2013-10-04), page e76012, XP055110544, DOI: 10.1371/journal.pone.0076012 (B1)

THOMPSON R H ET AL: "Tumor B7-H1 is associated with poor prognosis in renal cell carcinoma patients with long-term follow-up", CANCER RESEARCH, AMERICAN ASSOCIATION FOR CANCER RESEARCH, US, vol. 66, no. 7, 1 April 2006 (2006-04-01), pages 3381-3385, XP008091321, ISSN: 0008-5472, DOI: 10.1158/0008-5472.CAN-05-4303 (B1)

WO-A1-2013/173223 (B1)

J. HAMANISHI ET AL: "Programmed cell death 1 ligand 1 and tumor-infiltrating CD8+ T lymphocytes are prognostic factors of human ovarian cancer", PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES, vol. 104, no. 9, 27 February 2007 (2007-02-27), pages 3360-3365, XP055030513, ISSN: 0027-8424, DOI: 10.1073/pnas.0611533104 (B1)