Hyphal damage to A fumigatus induced by anti-Aspergillus T cells, polymorphonuclear leukocytes, and APCs, alone or in combination. The combination of PMNs, anti-Aspergillus T cells, and APCs resulted in the highest hyphal damage compared with all other settings (P < .001). Columns represent means ± SEM. AAT indicates anti-Aspergillus T cell.