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Lactobacillus bacteria spread across a flat squamous epithelial cell in this cell biology model. The irregular, wrinkled cell surface rises to a raised central nucleus, and dozens of small rod-shaped bacteria lie scattered over it singly, in pairs and in short chains. Edges ripple like real tissue, giving a sense of the microscopic scale. With no base, it lies flat on a desk and makes a handy hands-on teaching aid for lessons on the microbiome, healthy bacteria and cell structure.

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