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Published online by Cambridge University Press: 01 August 2014
A report is given on various forms of administration of Trenimon for local treatment of neoplasms of the serous membranes. For supervision and adjustment of the chemotherapeutic effect supravital staining with acridin orange and phase-contrast microscopy of the untreated effusion sediment are especially suitable. This facilitates distinction between newly formed and preformed granules, which is of importance for the diagnosis. Inhibition of dye-induced production of granules is a very sensitive criterium for assessment of cell vitality. The development of regressive changes in the tumour cells caused by chemotherapy is discussed with reference to micrographs of a metastatic pleural sarcomatosis. Electron-microscope studies on the exudate suggest that prior to necrobiosis an increased transfer of the granular nucleolar component into the cytoplasm takes place. This may be caused by a true increase in the transfer of nucleolar RNA towards the cytoplasm or by an inhibition in the late S-phase.