The inability or failure to produce blood cells, a serious medical condition where the bone marrow stops making new blood cells.
From Greek 'an-' (without) + 'haima' (blood) + 'poiesis' (creation or production). It's a medical term describing the complete absence of blood cell formation.
This condition is one of the most serious bone marrow disorders because without blood cell production, the body can't fight infections, carry oxygen, or clot properly—it's why radiation exposure is so dangerous!
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