Figure 2. In vivo effect of Lactobacillus acidophilus (LA) on the major apical Cl⁻/OH- exchanger (DRA) expression.¹² Immunofluorescent localization of DRA (red) and villin (green) in the colonic epithelium of control mice and 24h-LA treated mice. Control colon shows a modest expression of DRA on the epithelial surface whereas LA-treated colon shows enhanced expression of the DRA as visualized from the increased intensity of the yellow color in the merge picture. Published with permission from Am J Physiol.