- slc26a3 (dra)-deficient Mice Display Chloride-losing Diarrhea, Enhanced Colonic Proliferation, and Distinct Up-regulation of Ion Transporters in the Colon. Schweinfest, C.W., Spyropoulos, D.D., Henderson, K.W., Kim, J.H., Chapman, J.M., Barone, S., Worrell, R.T., Wang, Z., Soleimani, M. J. Biol. Chem. (2006)