=+5.39 ● The following data on degree of exposure to 242Cm alpha particles (x) and the percentage of exposed cells without aberrations (y) appeared in the paper “Chromosome Aberrations Induced in Human Lymphocytes by D-T Neutrons” (Radiation Research [1984]: 561–573):

x 0.106 0.193 0.511 0.527 y 98 95 87 85 x 1.08 1.62 1.73 2.36 y 75 72 64 55 x 2.72 3.12 3.88 4.18 y 44 41 37 40