Common mouse virus causes Parkinson’s‑like damage ^{CEFR A1}

Difficult words

• virus — a tiny germ that can make people sick
• brain — the organ in the head that controls the body
• damage — harm that makes something not work well
• model — a simple example used to study something
• infect — to give a germ to a person or animal

  Infected
• movement — the act of moving; physical motion or walking

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