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www.reference.com/article/red-blood-cells-76cc71f6ea4d6f67

Red blood cells carry oxygen and nutrients to the tissues in the body and take away carbon dioxide. They are also called erythrocytes. They get their red color from a pigment called hemoglobin, and it is the hemoglobin that actually carries the oxygen and carbon dioxide...

www.reference.com/article/red-blood-cells-specialized-82bbe77037c57d32

According to Springfield Technical Community College, the primary role red blood cells play in the body is to transport oxygen from the lungs to the various body tissues. To carry out this task, the cells are filled with a substance called hemoglobin. Hemoglobin is so i...

www.reference.com/article/long-red-blood-cells-live-f32452136131161a

A normal red blood cell lives for about 120 days. It takes about two days for the body to manufacture each red blood cell, and about two million are turned out every second. Production of new red blood cells occurs in the bone marrow.

www.reference.com/article/should-red-blood-cells-urine-bdd75b62841276db

It is normal for there to be a very small number of red blood cells in urine, according to MedlinePlus. However, the exact amount that counts as normal may differ, depending on the laboratory that performs the test.

www.reference.com/article/blood-red-296fb8cb15832643

Humans have red blood because it contains iron. Another way of explaining why humans have red blood is that the color is due to hemoglobin, which is the protein associated with iron that makes blood red.

www.reference.com/article/red-blood-cells-show-up-urine-19161107a2e53a48

Red blood cells may show up in urine due to kidney stones and tumor, states MedicineNet. These cells can enter the urine from the trauma of bladder catheterization or from the vagina during menstruation.

www.reference.com/article/alcohol-cause-low-white-blood-cell-count-b71433cc71a466ad

Alcohol abuse or alcoholism can cause a decrease in a white blood cell (WBC) count, according to Dr. Sears. A reduction in white blood cells can affect the immune system because white blood cells help to defend the body against infections caused by different pathogens, ...