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  1. www.webmd.com › a-to-z-guides › understanding-anemia-basicsAnemia: Causes, Symptoms, Diagnosis, Treatments - WebMD

    2023年8月3日 · What Is Anemia? Anemia is defined as a low number of red blood cells. In a routine blood test, anemia is reported as a low hemoglobin or hematocrit. Hemoglobin is the main protein in your red...