236 Evaluation of PD-L1 expression in primary lung tumor and metastatic lymph nodes in the presence of immune cells

• Tao Wang,
• Xiaomei Wang,
• Chris Hansis,
• Gerald Feldman

Affiliations

Tao Wang

1 Department of Neurosurgery, Xuanwu Hospital, Beijing, China

Xiaomei Wang

2 Department of Hepatology, First Affiliated Hospital, Jilin University, Changchun, China

Chris Hansis

1Phase Clinical Services, New York, NY, USA

Gerald Feldman

2U.S. Food and Drug Administration, Silver Spring, MD, USA