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Understanding haemophilia

When blood clots, a chain reaction involving several different substances, called clotting factors, takes place. In people with haemophilia, one of these clotting factors does not work properly. The symptoms of the disorder can range from severe to mild, depending on how active the clotting factor is. In people affected by haemophilia the gene instructions for these clotting factors are altered or missing.

A blood clot.
A blood clot.
Jim Sullivan, Cellsalive

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