Table 2. The relationship between the correlated double event probability and dose for sequential decays from ⁹⁰Sr - ⁹⁰Y.

90Sr - 90Y dose (mGy)	Fraction of cells which contain a double event
2	506 x 10-5
1	2.8 x 10-5
0.3	8.4 x 10-6
0.1	2.8 x 10-6
0.01	2.8 x 10-7
0.001	2.8 x 10-8

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