Abstract
The study of the human mucociliary transportation rate (NMTR) was investigated in 140 healthy subjects. We used macromolecular substance 113m/n-DTPA as a tracer and the Picker-3 Type method (USA) in combination with radiographs. 1. The mean NMTR of 140 normal Chinese individuals (from 5-82 years of age) was 8.1±3.1mm/min. 2. There were marked age-related differences in the NMTR of normals individuals. The groups between 11 and 40 years of age showed the highest rate, followed by the 2 groups aged 5-10 and 41-50 years, respectively, and those aged 51-82 years exhibited the lowest rate. 3. No sexual difference in the NMTR was detected.
