IL17A and fungal infectious disease: During fungal infection, IL-17 is expressed by different cell types, including γδT cells, ILC3, and innate-acting population of CD4+ natural IL-17-producing T cells (nTh17) [178,193,194], where only nTh17 cells expand in the oral cavity in an IL-1- but not IL-6- or IL-23-dependent manner [178].