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This is a page from a textbook discussing enzyme histochemistry. The main visual content is a micrograph labeled "FIGURE 1-9 Microscopic autoradiography." The text describes autoradiographs as tissue preparations where silver grains indicate the location of synthesized macromolecules. The micrograph shows two images, (a) and (b), of salivary gland tissue from a mouse injected with radioactive fucose, illustrating the location of newly synthesized glycoproteins. The text also discusses the importance of cultured cells in studying diseases like cancer and mentions the famous HeLa cells. It then defines enzyme histochemistry as a method for localizing cellular structures using enzymatic activity and outlines the steps involved. Examples of enzymes detected by this method, such as phosphatases and dehydrogenases, are provided. There is no information within this image that relates to the city of Wukari, Nigeria.
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