CXCL10 and cancer: who developed 2 μm mesoporous‐silicon discoidal particles loaded with a doxorubicin prodrug to demonstrate a ≈twofold increase in mice survival.[54] More recently, the groups of Mitragotri and Muzykantov used a similar spontaneous metastasis model to validate preclinically the anti‐cancer properties of PLGA nanoparticles loaded with the immunostimulant chemokine CXCL10 and adsorbed over the membrane of erythrocytes.