A few samples lack IRMS data due to insufficient amount of sample material (m means mass of carbon (m C (ug)) and sample (m (mg)), respectively).
A result from the rise of the bomb pulse would imply that the carbon in the analysed tissue was about 20 years old at the time of collection for all the subjects (not likely, the subjects were between about 30 and 60 years of age in the late 1950s).For the Swedish diet, of relevance for this study, C3 plants dominate over C4 plants. wheat and potatoes) differ from those of C4 plants (e.g.For the Swedish diet, of relevance for this study, C3 plants dominate over C4 plants..Another alternative would be that the turnover of cells is very slow resulting in an average FC value corresponding to the rise of the bomb pulse. The most plausible explanation seems to be that the carbon in the breast tumour samples mainly originates from recently consumed food.Figure 3 shows the results from the , results only for the declining part of the bomb-pulse curve) for each subject (the year of collection was 1983).heart attacks and strokes, develop slowly (mean biological ages 5–15 years).Quantification of the age of various structures in the plaque has gained a better understanding of the development of the plaque and opened for improved treatment methods.This discrimination of one of the stable isotopes occurs in each step of the food chain. wheat and potatoes) differ from those of C4 plants (e.g.maize and sugar cane) due to photosynthetic pathways.The analytical precision obtained for standards at this instrument is usually All samples were collected in 1983.Only results from the time after the bomb-pulse peak in 1963 are shown.