what are the differences between red and yellow bone marrow?
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There are two types of bone marrow. Red bone marrow is involved in production of blood cells, while yellow marrow is important for fat storage.
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A high WBC count likely indicates that an infection is present somewhere in the body, while a low number might indicate that an infection or disease—such as HIV or cancer—has slowed the bone marrow's ability to produce new WBCs. Red blood cells (erythrocytes) are responsible for delivering oxygen throughout the body.
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The bone marrow produces stem cells, the building blocks that the body uses to make the different blood cells – red cells, white cells and platelets. The erythropoietin sends a message to the stem cells telling more of them to develop into red blood cells, rather than white cells or platelets.
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In patients with leukemia, cell growth goes "haywire," and there is a rapid growth of abnormal white blood cells. So inside the bone marrow, blood cells are beginning to multiply and divide into red blood cells, white blood cells and platelets.
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The number of immature cells (called blasts) in the bone marrow is normal (less than 5 percent). A small percentage (less than 15 percent) of the red blood cells in the bone marrow may contain ringed sideroblasts.
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Red blood cells larger than 100 fL are considered macrocytic. When the cells grow too large, there are fewer of them than there needs to be and they carry less hemoglobin. This means the blood is not as oxygen-rich as it should be. Low blood oxygen can cause a range of symptoms and health problems.
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Anemia and macrocytosis increase the ESR. In anemia, with the hematocrit reduced, the velocity of the upward flow of plasma is altered so that red blood cell aggregates fall faster. Macrocytic red cells with a smaller surface-to-volume ratio also settle more rapidly.
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Red bone marrow is house in spongy bone which is found in the epiphysis of bone. Yellow marrow is fat stored in the medullary cavity.
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The red color might be mainly due to ferric oxides occurring as thin coatings on the soil particles while the iron oxide occurs as hematite or as hydrous ferric oxide, the color is red and when it occurs in the hydrate form as limonite the soil gets a yellow color.
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As verified by Bessman and Feinstein(15), homogeneous microcytosis is observed in patients with thalassemia minor when in comparison with that of iron deficiency anemia patients. As a result, RDW tends to be higher in iron deficiency anemia than in thalassemia minor(5).
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Yellow bone marrow contains mesenchymal stem cells (marrow stromal cells), which produce cartilage, fat and bone. Yellow bone marrow also aids in the storage of fats in cells called adipocytes. This helps maintain the right environment and provides the sustenance that bones need to function.
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Red blood cells are formed in the red bone marrow of bones. Stem cells in the red bone marrow called hemocytoblasts give rise to all of the formed elements in blood. If a hemocytoblast commits to becoming a cell called a proerythroblast, it will develop into a new red blood cell.
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Every type of blood cell in the bone marrow starts as a stem cell. Stem cells are immature cells that are able to make other blood cells that mature and function as needed. These cells are used in procedures such as bone marrow transplants.
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To summarize from the link, green are harvested earliest and contain the least vitamins, yellows are next and contain more vitamin C and less vitamin A and beta carotene, reds are harvest last and contain the most each vitamin types. Yellow and red are both sweeter and more fruity than green.
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Normal RBCs have a diameter of 6 - 8 μm. On a peripheral blood smear, normal RBCs are disc-shaped with a pale-staining central area called the central pallor. When judging red cell size on a blood smear, the classic rule of thumb is to compare them to the nucleus of a small normal lymphocyte.
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When red blood cells (erythrocytes) are produced in the bone marrow, they initially do contain a nucleus. ... When the red blood cells enter circulation, they don't have a nucleus. The lack of a nucleus is an adaptation of the cell to be better equipped for its task. The lack of a nucleus allows it to carry more oxygen.
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Human red blood cells are formed mainly in the bone marrow and are believed to have an average life span of approximately 120 days.