以往工作表明

人和大鼠的经脉循行线都有高度敏感、低阻抗和高音特性

而且都有严格的定位。形态学方面发现

这条线下神经束、神经末稍的分布显著多于非低阻区。而且

大鼠经络低阻点下肥大Observation of the number

distribution and characteristics of the mast cells under the low impedance acupuncture meridian lines of 19 amputated limbs of patients suffered from osteoblastoma and 21 rats was carried out microscopically afted sectioned and toluidine blue stained. Resulls revealed that the number of the mast cell was more concentrate under the meridian lines in comparison with their control areas. The difference was significant. This experiment reflexed another aspect of the morphological basis of the biophysical nature of the acupuncture meridian.