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摘要: During division and development there is within the cell an organized sequence of synthesis movement materials organelles. The position organelles related both to formation material its deposition or transport particular sites at times outside membrane. Plant tissues offer unique opportunities for study since each in a column cells which lies between meristematic mature regions tissue represents stage growth these can be studied either separately relative one another. are also very suitable microscopical techniques such as radioautography freeze-etch that especial importance studying cell.