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    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of, and finding treatments for, complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia, long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

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  1. DougM

    low MCH and Ferritin

    The quick answer is that red blood cells (erythrocytes) start off as stem cells that contain a nucleus and mitochondria (plus the other organelles etc). Those stem cells undergo differentiation (the process of changing from one cell type to another). So, Multipotential haematopoietic stem cells...