Occurrence of cross-resistance and β-lactam seesaw effect in glycopeptide-, lipopeptide- and lipoglycopeptide-resistant MRSA correlates with membrane phosphatidylglycerol levels. - Hines, Kelly M; Shen, Tianwei; Ashford, Nathaniel K; Waalkes, Adam; Penewit, Kelsi; Holmes, Elizabeth A; McLean, Kathryn; Salipante, Stephen J; Werth, Brian J; Xu, Libin (Journal of Antimicrobial Chemotherapy (JAC), 2020)