definition of a macrophage
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Definitions &Translations Wiktionary (0.00 / 0 votes) Rate this definition: macrophage (Noun). A white blood cell that phagocytizes necrotic cell debris and foreign material, including viruses, bacteria, and tattoo ink. It presents foreign antigens on MHC II to lymphocytes. Part of the innate immune system.
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Macrophages: Definition, Function & Types A macrophage is a large white blood cell that is an important part of our immune system. The word 'macrophage' literally means 'big eater.' It is an amoeba-like organism and its job is to clean our body of microscopic debris and invaders.
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Macrophage Once they are in the wound site, monocytes mature into macrophages. The spleen contains half the body's monocytes in reserve ready to be deployed to injured tissue. The macrophage's main role is to phagocytize bacteria and damaged tissue, and they also debride damaged tissue by releasing proteases.fter digesting a pathogen, a macrophage will present the antigen (a molecule, most often a protein found on the surface of the pathogen and used by the immune system for identification) of the pathogen to the corresponding helper T cell.
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The Immune System: Information about Lymphocytes, Dendritic Cells, Macrophages, and White Blood Cells A macrophage is the first cell to recognize and engulf foreign substances (antigens). Macrophages break down these substances and present the smaller proteins to the T lymphocytes. (T cells are programmed to recognize, respond to and remember antigens). Macrophages also produce substances called cytokines that help to regulate the activity of lymphocytes.
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- Medical Definition of midge. : any of numerous tiny dipteran flies (especially families Ceratopogonidae, Cecidomyiidae, and Chironomidae) many of which are capable of giving painful bites and some of which are vectors or intermediate hosts of parasites of humans and various other vertebrates—see biting midge.
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Macrophage Macrophages are versatile cells that play many roles. As scavengers, they rid the body of worn-out cells and other debris. Along with dendritic cells, they are foremost among the cells that present antigens, a crucial role in initiating an immune response.
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- Phage. Definition. noun, plural: phages. (1) A bacteriophage: a virus capable of infecting a bacterial cell, and may cause lysis to its host cell. (2) A suffix that means a thing that eats or devours (as macrophage). Supplement. Bacteriophages or phages have a specific affinity for bacteria.
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- Macrophages also stimulate Lymphocytes and other immune cells that react to pathogens as what is called an antigen-presenting cell, also known as a histiocyte. Macrophages are located throughout the bloodstream, and may be fixed or they can be freely motile and capable of amoeboid-like movement. Definition of Macrophage and Its Role in the Body The best definition of macrophage is a white blood cell operating within the body tissues. 2  In humans, macrophages measure approximately 21 micrometers in diameter.
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- Macrophages (Greek: big eaters, from Greek μακρος (makros) = large, φαγειν (phagein) = to eat) are a type of white blood cell that engulfs and digests cellular debris, foreign substances, microbes, cancer cells, and anything else that does not have the types of proteins specific to healthy body cells on its surface in a process called phagocytosis.
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- Macrophages. The macrophage is a vital type of white blood cell. A macrophage is a kind of swallowing cell, which means it functions by literally swallowing up other particles or smaller cells.
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What are Macrophages? Macrophages are a type of white blood cell which eat foreign material in the body. These cells are involved in the primary or innate immune response to a number of immune invaders, and they also make up an important part of the body's acquired immune system.acrophages help clean up bacteria and viruses in the body. Macrophages can be co-opted by HIV cells and aid the spread of the virus. A monocyte is the first stage of life for a macrophage. Macrophages are a type of white blood cell that eats foreign material in the body.
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Macrophages: Definition, Function & Types A macrophage is a large white blood cell that is an important part of our immune system. The word 'macrophage' literally means 'big eater.' It is an amoeba-like organism and its job is to clean our body of microscopic debris and invaders.uch like the enzymes in our own stomach are released to digest our food, the enzymes released by the lysosome digest the particle. The remaining debris, or what is left of the particle, exits the macrophage to be absorbed back into the body. Macrophages clean up a wide variety of unwanted foreign bodies.
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- Macrophages. The macrophage is a vital type of white blood cell. A macrophage is a kind of swallowing cell, which means it functions by literally swallowing up other particles or smaller cells.rigin. Macrophages come from specific white blood cells called monocytes. Monocytes are born from stem cells in the bone marrow and circulate throughout the blood stream. Once a monocyte leaves the blood, it matures into a wandering macrophage or a fixed macrophage.
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Origin and Functions of Tissue Macrophages Macrophages are distributed in tissues throughout the body and contribute to both homeostasis and disease. Recently, it has become evident that most adult tissue macrophages originate during embryonic development and not from circulating monocytes.
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bacteriophage bacteriophage. or simply phage; a virus that infects bacteria often killing them by lysis; many varieties exist, and usually each attacks only one kind of bacteria. Some bacteriophages are widely used as cloning vectors and for determining DNA sequence.
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- Macrophages are not the only types of cells that function through phagocytosis. There are other important swallowing cells that make up the immune system, such as cells called granulocytes, neutrophils and dendritic cells.he macrophage is a vital type of white blood cell. A macrophage is a kind of swallowing cell, which means it functions by literally swallowing up other particles or smaller cells.
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- show/hide words to know. 1  Inflammation: a response by damaged or infected cells to attract immune cells. 2  Macrophage: an immune cell that engulfs foreign material and dead cells... 3  Phagocytosis: the process used by some cells to engulf and digest foreign objects and dead cells in your body...acrophages are the biggest type of white blood cells-about 21 micrometers-or 0.00083 inches. Still too small to see with your eyes, but big enough to do the important job of cleaning up unwanted viruses, bacteria, and parts of dead cells. Macrophages don’t eat cells the same way you might eat your food.
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Macrophage Function Macrophage function in detail. Phagocytosis. The term phagocytosis is formed form the Greek words phagein meaning to eat, kytos or cell and osis which means process. Phagocytosis is the term used to describe the engulfing and destroying of defective or microbial cells.
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- Cells that engulf and digest bacteria and other foreign substances as well as debris from dead cells are called macrophage. Macrophage also stimulate white blood cells to … respond to pathogens.
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Viruses: Bacteriophage Lytic and Lysogenic Cycles A bacteriophage is a virus that infects bacteria. Bacteriophages are nicknamed 'phages' for short. Though it's true that a bacteriophage can't really give a bacterium the flu, bacteriophages share some similar features with the types of viruses we routinely avoid.
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LEUKOCYTES | Pulmonary Macrophages Macrophages serve as the first cellular line of defense against inhaled particulates and infectious agents. They are key participants in both innate non-antigen-specific immune responses and adaptive antigen-specific immune responses in the lung.
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- Answer     Macrophages. Macrophages are monocytes that have gained the ability to phagocytize bacteria in the tissues. They are agranular because, when stained, they do… not have granules in their cytoplasm. This is just a classification of leukocytes (or white blood cells).
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Macrophage Mφ) are a type of white blood cell that engulfs and digests cellular debris, foreign substances, microbes, cancer cells, and anything else that does not have the types of proteins specific to the surface of healthy body cells on its surface in a process called phagocytosis.acrophages are highly specialized in removal of dying or dead cells and cellular debris. This role is important in chronic inflammation, as the early stages of inflammation are dominated by neutrophil granulocytes, which are ingested by macrophages if they come of age (see CD31 for a description of this process).
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INTRODUCTION TO IMMUNITY A macrophage engulfs a virus or bacteria & breaks down their proteins. 1  Antigenic fragments of these proteins are presented on the surface of the macrophage. 2  The few Th-cells, which contain receptors on their surface that recognizes a particular presented foreign antigen, INTERACTS WITH that unique-foreign antigen.
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Macrophages: Definition, Function & Types A macrophage uses a process called phagocytosis to destroy and get rid of unwanted particles in the body. Phagocytosis literally means 'eat cell.' The process works like this: as the macrophage engulfs the particle, a pocket called a phagosome is formed around it.Then, enzymes are released into the phagosome by an organelle within the macrophage called a lysosome.uch like the enzymes in our own stomach are released to digest our food, the enzymes released by the lysosome digest the particle. The remaining debris, or what is left of the particle, exits the macrophage to be absorbed back into the body. Macrophages clean up a wide variety of unwanted foreign bodies.
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- Macrophages are not the only types of cells that function through phagocytosis. There are other important swallowing cells that make up the immune system, such as cells called granulocytes, neutrophils and dendritic cells.acrophages. The macrophage is a vital type of white blood cell. A macrophage is a kind of swallowing cell, which means it functions by literally swallowing up other particles or smaller cells.