To help the reader better understand the preceding paper by Gould and MacGregor (1977) and the following paper by Finot et al. (1977) about structural and functional changes in kidneys of rats fed 3-N6-lysinoalanine-containing food proteins, I invited Drs. D. H. Gould and J. T. MacGregor to prepare a cross-sectional drawing of a kidney that shows the spatial relationships of the affected pars recta to the rest of the kidney (see Figure on next page). I thank them for this figure. I also thank Robert David Wong of the Illustration Studio of the Western Regional Research Center, ARS, USDA, Berkeley, California, for his artistic skill in preparing the final drawing.
KeywordsProximal Tubule Spatial Relationship Food Protein Preceding Paper Outer Medulla
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