The Effect of Mitotic Cycle Duration on Chromosome Breakage in Meristematic Cells of Pisum Sativum

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One of the more apparent differences between acute and chronic irradiation is that exposure in the former is generally confined to a small fraction of a single mitotic cycle while in the latter; exposure of mitotically active tissue usually involves at least several cycles. Because of this difference, the number of cells in each stage of interphase would be of primary importance in acute radiation experiments since radiosensitivity is not the same in the G1, S and G2 periods. The duration of the total mitotic cycle should be more important in chronic experiments because most of the cells in the … continued below

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Van't Hof, J. & Sparrow, A. H. October 14, 1963.

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  • Main Title: The Effect of Mitotic Cycle Duration on Chromosome Breakage in Meristematic Cells of Pisum Sativum
  • Series Title: BNL (Series)
  • Series Title: Brookhaven National Laboratory Reports
  • Added Title: Brookhaven National Laboratory Report BNL-7316

Description

One of the more apparent differences between acute and chronic irradiation is that exposure in the former is generally confined to a small fraction of a single mitotic cycle while in the latter; exposure of mitotically active tissue usually involves at least several cycles. Because of this difference, the number of cells in each stage of interphase would be of primary importance in acute radiation experiments since radiosensitivity is not the same in the G1, S and G2 periods. The duration of the total mitotic cycle should be more important in chronic experiments because most of the cells in the tissue will have passed through each of the interphase stages (G1, S and G2) during the period of irradiation thus negating any different effect.

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  • October 14, 1963

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  • Feb. 5, 2022, 9:58 a.m.

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Van't Hof, J. & Sparrow, A. H. The Effect of Mitotic Cycle Duration on Chromosome Breakage in Meristematic Cells of Pisum Sativum, report, October 14, 1963; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1255889/: accessed April 14, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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