Method: the cross sections of 14 materials were obtained by using paraffin sectioning and the optical microscope was used to characterize the structure.
方法：采用石蜡切片法对14份研究材料制作根的横切片，应用光学显微镜观察其显微结构。
Method: Morphological and anatomical study on the organs of 20 medicinal species in Hypericum using tissue clearing, paraffin sectioning and thin sectioning.
方法：用整体透明法、石蜡制片法和半薄切片法对20种药用金丝桃属植物不同器官进行形态解剖学研究。
Based on the conventional paraffin sectioning method, observation was done at the optical level on the dynamics of starch during the ovular development in barley.
运用常规石蜡制片法，在光学水平观察了淀粉在大麦胚珠发育中的消长动态。
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