CHANGES IN THE QUALITATIVE AND QUANTITATIVE PARAMETERS OF THE SALIVARY GLANDS IN PATIENTS WITH END-STAGE CHRONIC RENAL FAILURE BEFORE AND AFTER KIDNEY TRANSPLANTATION salivary glands, renal failure, kidney transplantation, xerostomia, mixed saliva V. Afanasyev , D. Iussef https://doi.org/10.54890/1694-6405