CD274 and neoplasm: Aftereffect, with every single tumor cells eliminated [such as in DR5‐sensitive homogenous cellular xenografts in immunodeficient mice (Motoki et al, 2005; Zhang et al, 2007; Camidge, 2008; Kaplan‐Lefko et al, 2010)], surface PD‐L1 will potentially have limited consequence even if PD‐1 expressing T cells were present.