To elucidate whether CD93 of human MCs also regulates antitumor immunity in lung tumor patients, we first confirmed that NCI-H2452 human pleural mesothelioma cells also expressed higher levels of Cd93 and Ccl21 mRNA than human umbilical vein endothelial cells (HUVECs) (Figure S5A). Here, CCL21 is linked to pleural mesothelioma.