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Objective To evaluate the effect of shielding at the outside of radiation field by measuring the dose absorbed by the tissue outside the field in radiation therapy.Methods The dose absorbed by the tissue at 1cm offset the field was measured ofter setting radiation field and dose.The dose was measured again with shielding at the outside of radiation field in same field size and with the same prescription dose for comparison.Results The doses with or without shielding had distinct differences(P
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AIM: In order to explore the mechanism of the GC - like effect of Tsiao Shaihutang (TSS), the down - regulation of glucocorticoid receptor and mRNA by TSS were studied. METHODS: GR sites were determined by receptor radio ligand binding assay method. At the same time, GR mRNA level was determined by quantitative reverse- transcriptive polymerase chain reaction (RT- PCR) method. RESULTS: (1) GR sites and GR mRNA level were down - regulated significantly after GC, TSS (P < 0.01 ) treatment . (2) GR sites and GR mRNA level in GC plus TSS group were obviously higher than those in GC group (P < 0.01 ). CONCLUSIONS: These data suggested that TSS can significantly down- regulate GR and GR mRNA level.