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When DNA inside the nucleus of a human cell is damaged, a specific network of microtubule filaments forms in the cytoplasm around the nucleus and pushes on the nuclear envelope.

This is a process called microtubule nucleation, which is like laying the foundation stones of a bridge.

The researchers plan to follow up by directing chemical cargo along the microtubule branches.

These findings reveal the likely reason why microtubule poisons are effective for many patients.

They suspected the drug might prevent viral replication, which depends on the microtubule network to bring together the pieces of new viruses.