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本实验采用人胎气管支气管段作异种异位移植建立正常人类呼吸道实验模型。在移植后2个月,移植物即恢复正常的假复层纤毛柱状上皮结构和粘液分泌功能。取~(147)Pm金属平面源,剪成10×6mm~2的长方形利用~(57)Co为刻度源,经γ能谱测试确定该源β线活度为5.63×10~6 Bq。将其以6mm为周长卷
In this experiment, human fetal tracheal bronchial segment heterotopic heterotopic transplantation to establish a normal human respiratory experimental model. At 2 months after transplantation, the graft returned to normal pseudostratified ciliated columnar epithelium and mucus secretion. The ~ (147) Pm metal plane source was cut into a rectangle of 10 × 6mm ~ 2 and the activity of β line of this source was determined to be 5.63 × 10 ~ 6 Bq by gamma spectrometry using ~ (57) Co as the calibration source. Will be 6mm for the circumference of the volume