Do white blood cells regenerate?
359711
Your bone marrow makes red blood cells and white blood cells all day long.  Your blood is never the same every day.  The cells die off all the time all day and night.  Donating blood is to give other people blood products like red blood cells, plasma and other things so that if they lose blood during surgery it can be replaced or if people are anemic and need it because their bone marrow is not producing enough for their bodies needs.  Hope this helps\n\n\nOMG bone marrow transplants are NOT for white blood cells. There are injectable medicines that they give people who do not have enough white blood cells that forces their own marrow to make more of the white blood cells.
749808
That's a slightly odd question as each of those example has more than one cell type within it. Blood has red blood cells and several types of white, bones have several sorts of cells involved with them... and so forth. There are also issues like the fact red blood cells don't divide. I'm going to assume they're talking about the cells that create the blood, but that might be wrong. It's a vaguely worded question... if you got it as a homework question, you might want to get some clarification on exactly which cells are being asked about.\n\nYou can make a few generalisations. The two obvious ones for fast division are skin and blood, simply because they are both replaced regularly in the body. Bone cells aren't replaced so frequently as bones are more static, so would be have slower cell division.\n\nThe fast cell division answer for the plant cells is probably the root tip, as this does divide quickly. Plants do need to get their root system sorted out first, as otherwise they don't have a source of water/nutients to grow the rest.
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white blood cells, which is why when someone has bone cancer their white cell count drops
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I know of two kinds of cells that are not regenerated: Brain cells (neurons) and if you are female, eggs cells in the ovary.  The ones you are born with are still with you.
418844
To fend off the pathogen, your body produces white blood cells.  These cells target the disease and work to kill it off.
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A monocyte is a leukocyte, part of the human body's immune system that protect against blood-borne pathogens and move quickly to sites of infection in the tissues. It is one of the five major types of white blood cell, based on the appearance of white blood cells in stained smears as viewed under a light microscope.
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The process by which the formed elements of blood develop is called hemopoiesis or hematopoiesis.Before birth,hemopoisis first occurs in the yolk sac of an embryo and later in the liver ,spleen, thymus and lymph nodes of a fetus.\n\nRed bone marrow is a highly vascularized connective tissue located in the microscopic spaces between trabeculae of spongy bone tissue.About 0.05-0.1% of red bone marrow cells are derived from mesenchymal cells called pluripotent stem cells.these cells have the capacity to develop into several different types of cells.\nStem cells in red bone marrow reproduce themselves,proliferate and differentiate into cells that give rise to blood cells,marcophages,reticular cells,mast cells and adipocytes.\n\nIn order to form blood cells,pruripotent stem cels in red bone marrow produce two further types of stem cells,called myeloid stem cells and lymphoid stem cells.\nMyeloid stem cells begin their development in the red bone marrow and give rise to red blood cells ,platelets, monocytes, neutrophils,eosinophils abd basophils.\nLymphoid cells begin thier development in red bone marrow but complete it in lymphatic tissues,they give rise to the lymphocytes.\n\nHope this helps ya.Please check my spelling coz i think i misspelled some words in there.
328175
A virus works by invading a cell then commandeering it's enzymatic systems to make more copies of itself. When the cell is full of virii, it eventually bursts, releasing more virii into the organism to invade more cells. When the white blood cells recognize and eliminate those infected cell, they prevent the spread of new virus particles to other non-infected cells.
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Blood is created in the bone marrow, or rather the red blood cells are created by hematopoetic stem cells.  however, there are MANY different kinds of cells in your blood, and getting them "matured" happens in many different places throughout your body, including the spleen, lymph system, etc.
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yes the brain cells can regenerate.. by process called WALLERIAN DEGENERATION(here degenerate means the dead cll has to gone off first later new one will regenrate... firt of all u have to knw wht r the cells in brain , most of are neurons..and other supporting cells like .neuroglial cells,ependymal cells,schwann cells. satellite cells(ofcourse they r named as they surround peripheral ganglia(ganglia means bunch of neurons )).\nhere wallerian degeration is happend in axon(stem) of neuron.  but it depends of type of injury to axon(whether whole or partial axon is involved).
581002
Cell replacement is accomplished by cell division, which makes more cells to replace cells that have been damaged by wear and tear or senescence (cells growing old and failing to function).\n\nIn some cases, a single cell of a certain type can divide to give rise to two daughter cells of the same type. This process allows one cell to replace cells of its own type. For example, a liver cell can divide to generate two liver cells. Another example is endothelial cells, which line the inside of our blood vessels; a single endothelial cell will duplicate itself by dividing into two cells.\n\nIn another case, a special kind of cell, called a stem cell, is used for cell replacement. These cells also divide into two daughter cells. Some of these daughter cells become stem cells that resemble the mother cell. Other daughter cells become the cell type that needs to be replaced. For instance, our skin contains stem cells called basal cells. These basal cells divide into daughter cells. Some of the daughter cells become basal cells that retain the ability to divide, and other daughter cells become specialized into skin cells. That way, some of the cells are used for cell replacement, while other cells retain the ability to divide in the future so that we don't run out of skin cells.\n\nIn still another case, a single cell called a pluripotent stem cell can divide to generate—and thus replace—lots of different cell types. For example, our bone marrow contains cells called hemopoietic stem cells that can divide to generate the whole range of blood cells. A single hemopoietic stem cell can divide several times to generate red blood cells as well as different kinds of white blood cells.\n\nThe rates at which cells are replaced vary quite a bit. For example, in the inner lining of the small intestine, cells turn over in a week or less. In the pancreas, the turnover time may be as long as a year or more.\n\nSometimes the rate of cell division to replace cells depends on the state or size of the tissue. Liver cells rarely divide, but if there is injury to the liver and the liver is somehow reduced, liver cells will divide to get the liver back to the right size. Similarly, in the skin, the basal cells will divide only to keep the skin at a certain thickness. If the outer layers of dead skin peel away more frequently, the basal cells on the inside will divide more frequently to make up for the lost skin. If a person takes good care of his or her skin and there is little damage and fewer cells to replace, the basal cells will reduce the frequency of division.
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Hereditary and congenital disorders.  Also drugs, penicillin can cause leukopenia which is this medical term for low white blood cells.  Chemotherapy also.  Stay in touch with doctors you need to find out cause not guess.
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The spleen filters blood and gets rid of the old and dying red blood cells.  The spleen also hold extra blood within it.\n\nBone marrow is where red blood cells are produced.
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White blood cells are cells in the blood that fight infection; They are a part of the immune system.\n\nIf you have a 'little hight' white blood cell count, your body is probably fighting an infection. Your doctor is probably sending you to hemotologist to make sure you don't have an undetected infection.
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Spleen is useful to\n \n1) filter for your blood, cleansing it of bacteria, viruses and other debris. When blood flows through your spleen, white blood cells attack and remove any foreign invaders. This keeps your blood clean and helps protect you against infection.\n\n2) Destroying old red-blood cells\nRed blood cells have a lifespan of around 120 days, after which your spleen breaks them down. The red blood cell remains are transported elsewhere in your body where they are excreted or recycled to manufacture new red blood cells.\n\n3) Making blood cells\nBefore birth, foetuses produce red and white blood cells in their spleens. Shortly before birth the spleen loses its ability to make red blood cells and bone marrow takes over this job. The spleen continues producing infection-fighting white blood cells throughout our lives.\n\nWhat happens if spleen is removed (Living without a spleen)\nIt is possible to live without a spleen as most of its functions can be taken over by other organs. However, people without spleens are more vulnerable to all kinds of infections.
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Leukocytes are WBCs... "Leuko-" = white..."-cyte" = cell... Other white blood cells include Neutrophils, Monocytes, Eosinophils, & Basophils...other leukocytes are T-lymphocytes and B-lymphocytes...natural killer cells...
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activated lymphocytes (B cells and T cells) during an infection