实验材料与方法一、实验动物与过程。本实验所用动物为普通小白鼠,体重自16至29公分不等。前后共进行了十三组实验,其中第一至第七组实验为探索阶段,故用药量,服药方法及解剖取材时间等各次均不统一,本文内从略。第八至第十三组实验根锯前七组发现的、问题作进一步探索,并将服药量、服药方法、解剖取材时间以及取材部位和切片方向等客观因素,尽量取得一致,故这六组实验所得结果亦效恒定,兹将其实验过程叙述于下:鉴于前七组实验虽然根据观罕结果,也发现了一些问题,但由于实验过程中的客观因素十分不一致,故难以作对比。因而自八组开始证实验中尽量将客观条件取得统一。服药方法都用水煎 Experimental materials and methods 1. Experimental animals and processes. The animals used in this experiment were ordinary white mice ranging in weight from 16 to 29 cm. Before and after a total of thirteen groups of experiments, the first to the seventh group of experiments for the exploration phase, so the amount of medication, medication methods and anatomical drawing time, etc. are not uniform, this article omitted. The problems found in the first seven groups of the eighth to thirteenth group of experimental root saws were further explored, and the objective factors such as the amount of medication taken, the method of taking the medicine, the time of dissection, the location of the materials, and the slice direction were as consistent as possible. The results obtained from the experiment are also constant. The experiment process is described below: Given that the first seven groups of experiments, although based on the results of observations, also found some problems, due to the inconsistent objective factors in the experimental process, it is difficult to make a comparison. Therefore, as far as possible, the objective conditions have been unified since the eight groups began the experiment. Medication methods are fried with water