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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.

A hepatitis C virus particle sliced open to show the layers packed inside its round shell. Knobby glycoprotein spikes cover the outer envelope, and the cutaway face reveals a beaded ring along the wall, a bumpy inner capsid built from rounded subunits and a looping RNA genome coiled at the center. The stylized, chunky detail reads clearly from across a room, suiting a virology classroom, a medical office shelf or a science-themed decor piece.

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