Fig. 1.
A: the relationship between the mass of brain and age (scatterplots of the raw data). B: the relationship between left ventricular mass (LVM) and age (scatterplots of the raw data). C: the relationship between the mass of kidneys and age (scatterplots of the raw data). D: the relationship between the mass of liver and age (scatterplots of the raw data). E: the relationship between the mass of spleen and age (scatterplots of the raw data). Symbols: ⧫, African-American men; ▪, Caucasian men; ▴, African-American women; ×, Caucasian women.