K-ras mutations are major genetic events that drive cancer development associated with aggressive malignant phenotypes. while expression of the immune checkpoint molecule PD-L1 plays a key role in cancer evasion of the immune surveillance that also profoundly affects the patient outcome. However. the relationship between K-ras oncogenic signal and PD-L1 expressions as an important are... https://www.jmannino.com/quick-save-Canon-imageCLASS-MF227dw-Monochrome-Multifunction-Laser-Printer-great-choice/