Figure 5: Expression of Gpx1, GAPDH , FMO2, SOD genes in testis (A) and liver (B) of control and treated animals reported as 2-ΔCt. ΔCt is the difference in Ct (Crossing threshold) values for the gene of interest and the endogenous control (housekeeping gene). Rats were treated with a single intratracheal instillation of AgNPs or AgNO3 solution and their tissues (testis and liver) were examined after 7 or 28 days.