Diet as a Factor in Length of Life 

 and in Structure and Composition of Tissues 



of the Rat with Aging 



Human Nutrition Research Division 



Agricultural Research Service 



UNITED STATES DEPARTMENT OF AGRICULTURE 



Home Economics Research Report No. 24 



Washington, D.C. Issued October 1964 



For sale by the Superintendent of Documents, U.S. Government Printing Office 

 Washington, D.C. 20402 • Price 70 cents 



