[44]FUJITA K,ITO Y,HIRAIT,etal.Geneticrelatednessof Mycobacteriumavium-intracellularecomplex isolates frompatientswithpulmonary MAC disease and theirresidential soils[J].a double-edged sword in the development of cancers, has attracted extensive attention. Since T-helper 9 (Th9) cell-derived IL-9 was verified to play a powerful antitumor role in solid tumors, an increasing number of researchers have started to pay attention to the role of IL-9-skewed