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Raymond E. Zirkle, Ultraviolet-Microbeam Irradiation of Newt-Cell Cytoplasm: Spindle Destruction, False Anaphase, and Delay of True Anaphase, Radiation Research, Vol. 41, No. 3 (Mar., 1970), pp. 516-537
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Raymond E. Zirkle (1970) studied this question.
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