in similarly treated rats , proteinuria and glucosuria developed at the onset of tubular necrosis and disappeared when the tubules were completely relined by epithelium suggesting that they are due to diffusion of protein and glucose from interstitium into tubular fluid across the denuded basement membranes and that epithelial cells , under normal conditions , act as a barrier to diffusion of certain substances between the interstitium and tubular fluid .
C0014609
epithelium
C0014597
epithelial cells