③切片:由于生物样品太厚,不能直接 用光镜观察,需切成1~10μm的薄片 movement of microtome arm specimen embedded in wax or resi ribbon of ribbon of sections on and mounted under condenser a cover slip 2222 EXAMINATION WITH LIGHT MICROSCOPE③ 切片：由于生物样品太厚，不能直接 用光镜观察，需切成1～10μm的薄片