For this purpose, we evaluated the expression of genes downstream of AhR, such as cytochrome P450 family 1 subfamily A member 1 (Cyp1a1) and subfamily B member 1 (Cyp1b1) and Il22 in the lungs and colons of mice with aspergillosis and candidiasis, respectively. The gene discussed is CYP1B1; the disease is candidiasis.