In the concentration group, the proliferation of epithelial cells on the base of the giraffe plates was severe, causing the epithelial cells of the giraffe fibres to be similar to plates and the epithelial cells of the giraffe plates to be shortened, In a high-concentration group, epithelial cells in the gill tissues were severely damaged, epithelial cells based on the sabre tissues disappeared, and epithelial cells in the sabre fibers were necrotic.<br>
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