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We just fixed downloads: every STL now comes straight from fast, reliable storage, saved under its own name, we're making 10,000 STL files and dozens of new tools, so things might break. We'll fix them ASAP.

Root hairs bristle from the edge of this dicot root cross section, a botany model that lays out every tissue ring in clear relief. A thin epidermis wraps a wide cortex of plump, rounded cells, inside which a ring of small endodermis cells encircles the vascular core. At the center, a cross-shaped xylem star sits between hollow phloem pockets. A clear teaching model for plant biology classrooms and an attractive disc for a science display shelf.

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