IL2 and aspergillosis: Studies in mice have clearly shown that CN expression in CD11c and LysM expressing cells is required for resistance to A. fumigatus infection,26 likely due to the pathologic Th17 response seen in the lungs of mice lacking the NFAT‐dependent cytokine IL‐2 in CD11c+ cells during aspergillosis.12 These findings indicate the role of myeloid cells in mice, whereas conclusive results confirming the processes in humans are lacking.