Second histochemical and cytochemical staining staining tissue sections and cell chemistry Henan, is the physical and chemical techniques applied to tissue samples by microscopy and chemical analysis methods to study the chemical composition of tissues and cells, and to observe the chemical composition positioned within the tissue, cell, the content and its variation. Insoluble coloring matter of the chemicals produced by a chemical reaction to display. For certain chemical components, such as: Fe ++ glycogen, nucleic acids, etc., can be direct or indirect and the chemical reaction to produce colored precipitate display portion and its relative content. For enzymes, show its activity, there must be a substrate for the enzyme (the substance to the enzyme action), by the decomposition enzyme substrates, directly or indirectly generate a coloring matter is displayed. All cells in situ observation of chemical substances displayed under an optical microscope, said staining tissue sections, if the cells in situ electron microscopy with the colored portion of the chemical composition, called electric cell chemical microscopy, Notes (1) must be specified by the relevant instructions , use and maintenance of automatic associations processors, embedded machine, Grinder, sealing cover glass and other instruments. (2) To prevent damage due to power outages block associations, caused by mechanical failure. Once the supply of tissue sections such incidents must be promptly reported to the department director, to take emergency measures as quickly as possible appropriateness for disposal. (3) using an automatic processor Societies: ① reasonable set of run-time (full advantage of the night). ② fixation, dehydration ambient temperature does not suffer from> 30 ℃. ③ ethanol, xylene and melting wax volume, greater than 5 to 10 times more than the total volume of the block association, and should always be filtered tissue sections suppliers to keep clean; should always check the concentration of reagents, timely updates. ④ community block for a lot, according to the size of the batch processing; small communities may be appropriate to reduce the processing time. Tissue sections offer voyage teaching (certified), tissue sections provided by Xinxiang City Teaching Equipment Co. voyage. Xinxiang City voyage Teaching Equipment Co. (www.xxyuanhang.cn) is an industry leader in Henan Xinxiang, specimen model years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. On the voyage instructional leadership with the staff warmly welcome all inquiries negotiations to create a better future teaching voyage.