Boy with Haemophilia, an inherited blood disorder in which the clotting factor is absent. The disorder is passed down by the mother who is not affecte

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Boy with Haemophilia, an inherited blood disorder in which the clotting factor is absent. The disorder is passed down by the mother who is not affected but whose male offspring have a fifty per cent chance of inheriting Haemophilia. From Jules Rengade Les Grands Maux et les Grands Remedes, Paris, c1890.

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Photo credit: © Universal History Archive/UIG/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: absent, affected, blood, boy, c1890, cent, chance, clotting, disease, disorder, factor, familial, fifty, gene, grands, haemophilia, inherited, inheriting, jules, les, male, maux, medicine, mother, offspring, paris, passed, recessive, remedes, rengade, sex-linked