红细胞数目过少称为“贫血”。表现为面色苍白，疲劳和呼吸急促。
Having too few red cells is called "anemia". It can make a person look pale and feel tired and short of breath.
结果血红蛋白浓度和网织红细胞数目明显减少，血清红细胞生成素水平明显增加。
Hemoglobin concentration and the number of reticulocyte decreased greatly, while serum erythropoietin (EPO) level increased significantly.
红细胞的数目，通常会少于正常，造成贫血。
The number of red cells is usually less than normal, resulting in anemia.
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