Table 1.

The functions of IL-9 in normal and tumor tissues

Tissues		Functions	References
Normal Tissues	Airway	Favors allergic inflammation, specifically in allergic asthma	Temann et al.1
	Intestinal	Immunity against Parasites	Licona-Limón et al.2
Tumor Tissues	Melanoma Lung cancer Colon cancer Breast cancer	Anti-tumor	Lu et al.9 Lu et al.10 Purwar et al.4 Do Thi et al.26 You et al.27
	T-cell lymphomas	Pro-tumor	Qiu et al.23 Lavorgna et al.24