普通光镜制片过程： Specimen embedded in paraffin wax or Microtome arm plastic resin 1、样品固定（甲醛） Metal or glass blade 2、石蜡包埋 Ribbon of thin sections 3、显微切片 Ribbon of sections on 4、染色 glass slide,stained and mounted under a cover slip ccececo Figure A-18 Sectioning with a Microtome.The fixed specimen is embedded in paraffin wax or plastic resin and mounted on the arm of the microtome.As the arm moves up and down through a circular arc,the blade cuts successive sections.The sections adhere to each other, forming a ribbon of thin sections that can be mounted on a glass slide. stained,and protected with a coverslip. 主讲：汤华 主讲：汤 华 ™普通光镜制片过程： 1、样品固定(甲醛) 2、石蜡包埋 3、显微切片 4、染色