(A) Changes in the expression of molecules associated with type I interferon (IFN) production (RIG-I, MDA-5), signaling (STAT1, STAT2) and response (OAS1, MX1) between healthy and chronically SIV infected animals was determined in the lung, colon and jejunum by DNA microarray analysis. (B) Comparison of the induction of type I IFN-stimulated retroviral restriction 26 factors, BST2/tetherin APOBEC3B, TRIM5, theta defensin-1, SAMHDI, and viperin in the lung, colon, and jejunum during chronic SIV infection. *p-value<0.05