it appears that the renal enlargement , as well as the increase in proteinuria and the tubular alterations which followed the protein injections , might have been caused in part by effects on the kidney of protein molecules per se , perhaps most likely by the effects on the tubular cells of an increased amount of protein filtered through the glomerular membranes , rather than entirely by effects of products of protein digestion and metabolism reaching the kidney through the blood stream .
C0017665
glomerular membranes
C0022646
kidney