Display glycogen periodic acid Schiff (PAS) reaction: ⑴ principle: Glycogen is a polysaccharide animal, colorless, abundant in the liver and muscle cells cytoplasm. PAS reaction (Periodic acid schiff Reaction) can generate a purple substance at the site where glycogen, which will it be displayed. RAS reaction in two steps: First, a strong oxidant periodic acid (Periodic acid, formula HIO4), the CC bond glycogen glucose molecules in tissue slices open the CHOH-CHOH oxidized to produce dialdehyde and Schiff reagent leuco magenta sulfite molecule binding to sugar aldehyde, to generate a new purple complex. HIO4schiff polysaccharide aldehyde reagent purple reaction product (oxide) (reagent preparation and histological methods are detailed technical monograph) ⑵ Results: purple glycogen granules. Liver, spleen: liver by the back door toward organ along its long axis, the direction of every 1.5-2cm splenic tissue sections cut parallel to the longitudinal suppliers, cut into several pieces, according to the order of the corresponding flat on the container size of the pathological tissue sections The following put a layer of cotton wool or several layers of gauze to infiltrate in fixative. Avoid bending specimens and overlay each other. Renal: renal outer edge along the midline toward the renal hilum make a horizontal section, cut down flat on the container plant tissue sections, re-fixed. Lung: Because of its organizational structure is relatively loose, often floating in the liquid into the fixative, it should be covered with several layers of cotton or gauze on its surface, the surface is dry to prevent lung tissue, promote infiltration fixative. Lobectomy as a whole, can cut fixed by the outer edge of the middle lobe bronchus along strike towards the direction of the bronchial resection margin or hilar cut, cut down, into the fixative. Tissue sections processed tissue sections Shangqiu voyage teaching by teaching Equipment Co., Ltd. Xinxiang City voyage. Xinxiang City voyage Teaching Equipment Co. (www.xxyuanhang.cn) (www.yuanhang369.com) strong, credible, in Xinxiang specimen model industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the voyage into the brilliant teaching and you work for a better future! You can also access (www.yuanhang369.com/supply_details_44774910.html), for more information about the company.