Tofersen slows a rare form of ALS ^{CEFR A1}

Difficult words

• disease — A health problem that makes the body worse
• nerve — A body part that sends messages to muscles

  nerves
• breathe — To take air into the lungs and out

  breathing
• medicine — A drug or treatment that helps a sick person
• rare — Not common; only a few cases
• improvement — A change that makes the condition better

  Improvements

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