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A Hepatitis B virus cutaway shows the Dane particle in a round slice, with a ring of studded surface antigens around the outer envelope. Inside sits a hexagonal icosahedral core holding a looped, partly circular strand of DNA with an attached polymerase body. Two neat rows of spheres form the shell layers, giving the disc a clear, readable structure. The flat round shape sits easily on a desk without a base. Use it in biology or microbiology lessons on virus structure, or display it as a science piece.

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