Pathology in their daily work, due to various reasons often leads to poor biopsy quality, resulting diagnostician endoscopic diagnosis difficult. Routine pathological producer is the most important part of biopsy techniques, sub-drawn, several major steps fixation, dehydration, embedding, sectioning, staining, were mounted and so on. A fixed fresh tissue properly fixed in order to maintain the natural shape of cells and tissues, otherwise various enzymes within cells under hypoxic conditions break down proteins within the cell autolysis cause tissue damage. When the tissue into fixative can stop autolysis pathological slices, keeping the prototype and tissue structure. Therefore, surgical removal of tissue samples must be fixed promptly. Our hospital with a 10% solution of formaldehyde fixed human biopsy tissue, the amount of fixative is 10 times the total volume of tissue specimens. Depending on the size of the container specimen histopathology, so that the specimen is not deformed into. 49 ℃ ~ 51 ℃, the water temperature is low, small folds can not be softened, the water temperature is too high will cause tissue cells spread. Keep the water clean biopsy, avoid water residual tissue debris to prevent contamination during framed piece. 4 embedding small piece of tissue should be linearly embedded, massive tissue when embedding should be flattened to prevent slicing incomplete and chaotic situation caused by misdiagnosis chip organization. For some wall, the wall protruding tissue or tissue should be buried legislation that embedded along the longitudinal projection bread buried in order to observe its various levels. In order to ensure the smooth sections should be used having a melting point of 60 ~ 62 ℃ paraffin embedding performed. 5 slices as possible while keeping sliced ??slices intact, thin and uniform, usually 2 ~ 3μm, to the lymph nodes, tonsils and other foods rich in lymphocytes in tissue sections require less than 2μm, can not appear too thick slices and cranny, endoscopic Take seized specimens cut out four facets need more. Avoid the emergence of parallel slices ripples, folds broken empty, uneven thickness, wax curling phenomenon. Histological _ voyage teaching (certified) _ biopsy 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.