Frequently arising ESX-1-associated phase variants influence Mycobacterium tuberculosis fitness in the presence of host and antibiotic pressures. - Luna MJ; Oluoch PO; Miao J; Culviner P; Papavinasasundaram K; Jaecklein E; Shell SS; Ioerger TR; Fortune SM; Farhat MR; Sassetti CM (MBio, 2025)