Rare neurons reconnect spinal circuits after injury (English, Level A1)

Some rare neurons can reconnect parts of the spinal cord.
Spinal cord injury breaks the bundle of nerve signals.
This break often causes lasting paralysis and health problems.
Researchers put neural stem cells into the injured cord.
A small group of transplanted neurons join walking circuits.
When scientists activate these neurons, leg muscles respond.
Some animals later showed muscle reactions.
Transplanted neurons are young and must learn to work.
Future therapies may combine cells with activity training.

Difficult words

neuron — a brain or nerve cell that sends signals

neurons

spinal cord — the bundle of nerves inside the spine

injury — harm or damage to a body part

paralysis — loss of movement in part of body

stem cell — a young cell that can become others

stem cells

activate — make something start or work

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Rare neurons reconnect spinal circuits after injury^{CEFR A1}

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