<b>Effects of </b><b><i>Staphylococcus aureus</i></b><b> Lipoteichoic Acid on Apoptosis of Bovine Mammary Epithelial Cells and the Protective Effect of Folic Acid</b>
Xrn1 knock out A549 cells were infected with WT A/Puerto Rico/8/1984 (H1N1) ("PR8"), or PA-X deficient PR8-PA(∆X) viruses, or mock infected for 16 hours before RNA extraction. 5’RACE was then performe