I believe this was added because a uworld question directly tested this fact
Not directly tested, but it does say this: Cord factor is composed of two mycolic acid molecules bound to the disaccharide trehalose (trehalose dimycolate). In vivo, cord factor forms cylindrical micelles that surround the organism and prevent macrophage-mediated destruction within the phagolysosome. It also forms a highly toxic crystalline monolayer on hydrophobic surfaces (oil-water/air-water interface [eg, edge of cavitation]) that helps drive the formation of caseating granulomas (a hallmark of M tuberculosis infection).
Need to check NBME 27 though
