CD274 and adenocarcinoma: Figure 2A shows representative images of PH LUADs (lane 1), PC LUADs (lane 2), NH LUADs (lane 3), and NC LUADs (lane 4). Figure 2B shows that PD-L1-positive adenocarcinomas are significantly higher infiltrated (p = 0.0075; Fisher’s exact test) than PD-L1-negative counterparts.