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Examples of the distribution of inactivated cells. (A) The V79 quartets were illuminated for 2 min to give a surviving fraction of 51%, k4 = 97 [χ2(H0) = 52; χ2(H1) = 9.1; χ2(H2) = 1.5]. (B) The MDCK II octets were illuminated for 5 min to give a surviving fraction of 57%, k8 = 110 [χ2(H0) = 36.1; χ2(H1) = 7.1; χ2(H2) = 7.8]. Exp. is the experimental distribution. H0, H1 and H2 are the corresponding model distributions explained in Materials and Methods.
