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An invasive melanocyte clings to a cut-open blood vessel in this organic cell biology model, stretching its branching arms across the vessel wall. The star-shaped cell has a rounded nucleus and a bubbly surface, with one long arm squeezing down into the wall. The cutaway shows layered wall tissue with flattened cells and disc-shaped red blood cells resting inside the vessel. It makes a vivid teaching piece for a biology classroom or a bioelectricity study desk, and a striking display model for anyone curious about how cells migrate through tissue.

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