Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years, ...

Excess blood cell production in two myeloproliferative neoplasms (MPNs) — essential thrombocythemia, or ET, and polycythemia vera, also known as PV — can impair circulation, according to Dr. Tiziano ...