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New Biological Robots Build Themselves

Inspired by biological systems, scientists have developed miniature robots that can self-assemble using parts that float randomly in their environments. The robots also know when something is amiss and can correct their own mistakes.

Scientists have long been fascinated by how living cells are able to replicate DNA using building blocks floating randomly inside the cell's nucleus. The interior of the nucleus is filled with a gel-like liquid known as nucleoplasm. The DNA building blocks, known as nucleotides, float around in this liquid like ingredients in a molecular soup. Also present in the nucleoplasm are proteins known as polymerases, which pluck nucleotides from the soup as needed when copying DNA.

News source: MSNBC

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