DRY MASS DISTRIBUTION AMONG INTERPHASE NUCLEI OF TRADESCANTIA AS DETERMINED BY X-RAY MICRORADIOGRAPHY AND MICROINTERFEROMETRY
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The interphase nuclei of petal cells of Tradescantia paludosa, which showed an active protein and ribonucleic acid (RNA) turnover but no detectable deoxyribonucleic acid (DNA) turnover, were assumed to be in metabolic interphase. These nuclei were estimated to have a dry mass of 0.25±0.03 ng (mean and standard deviation) by X-ray microradiography, and 0.25±0.04 ng by microinterferometry. The nuclear dry mass in this stage diverged wider (12.0-16.0%) than that in the interphase preceding meiosis (7.5%) and that in the zygotene stage of meiosis (3.4%). This divergency in dry mass is due mainly to an active turnover of nuclear acidic proteins, and may be an expression of divergent states in nuclear activity at the beginning of the differentiation period.
- 日本組織細胞化学会の論文
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- DRY MASS DISTRIBUTION AMONG INTERPHASE NUCLEI OF TRADESCANTIA AS DETERMINED BY X-RAY MICRORADIOGRAPHY AND MICROINTERFEROMETRY