Effects of the ingested caesium dose on the mortality rate in the F
generation. (a) A two-dimensional scatter plot. The ingested caesium dose in the F2 generation (but not the F1 generation) is provided on the x-axis. (b) A three-dimensional scatter plot. The ingested caesium doses in both the F1 and F2 generations are plotted. “F1” and “F2” indicate the ingested caesium dose in the F1 and F2 generations, respectively. “MR” indicates the mortality rate. Plots showing the same amount of F1 ingestion are connected by lines.