The hybridization data were extracted with Feature Extraction Software 10.7. Gene Spring 12.0 Software was used for data analysis. The read dates were normalized. For each microarray experiment, a Student t test with a false discovery rate (FDR) of 0.05 was amplified to test the hypothesis that a gene's expression does not differ between infected and control sheep. Statisti-cally, only genes with a Student's t test P-value