The purpose of this work was to determine the protein composition of whole saliva in 50 year-old patients an d older with manifested and terminal stages of periodontal disease. in correlation with control group of young healthy persons. Experimental and control group consisted of 30 patients. The periodontal status was determinate by using appropriate periodontal index (Sillness-Loe). https://www.footballmediaservices.com/product-category/aerosols/