Notably, Salmonella covalently attached to sialic acid‐decorated AuNPs could recognize L‐selectin on the surface of neutrophils, hence realizing the tumor‐homing colonization of oncolytic bacteria.[23] There is a body of evidence indicating that VNP colonizes tumors by penetrating from the blood vessels into the tumor core,[24, 25] which suggests that the rapid clearance of VNP from blood may result in poor tumor colonization. This evidence concerns the gene SELL and neoplasm.