PLA2G1B and mastitis: The objectives of this study were to (i) examine PLA2G1B-induced reduction of Escherichia coli and Staphylococcus aureus virulence in vitro in immortalized MECs; (ii) assess the usefulness and effectiveness of intramammary infusion of PLA2G1B as a treatment for cows with clinical or subclinical mastitis caused by different bacteria.