Deși a fost descoperit încă din 1972, originea antigenului AnWj nu a fost explicată până acum. Însă recent, relaţia sa moleculară cu o genă a fost elucidată, ducând la crearea celui de-al 47-lea sistem de grupe sanguine, numit MAL.
Această descoperire este esenţială întrucât creșste şansele de a găsi grupa sanguină potrivită şi poate evita situațiile periculoase în timpul transfuziilor.
Dr. Louise Tilley de la IBGRL Red Cell Reference, NHS Blood and Transplant, a dedicat aproximativ 20 de ani pentru a rezolva acest mister.
„Contextul genetic al AnWj a fost un mister timp de peste 50 de ani şi unul pe care eu personal am încercat să îl rezolv timp de aproape 20 de ani din cariera mea. Reprezintă o realizare uriaşă şi punctul culminant al unui lung efort de echipă, pentru a stabili în cele din urmă acest nou sistem de grupe de sânge şi pentru a putea oferi cea mai bună îngrijire pacienţilor rari, dar importanţi”, a declarat Dr Louise Tilley.
Pe lângă sistemele de grupe sanguine A, B și O, există numeroase alte sisteme bazate pe proteine și zaharuri. Nerespectarea sistemelor de grupe sanguine poate provoca reacții negative.
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