Words Starting With "L"

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Leukocoria

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Leukocoria is a medical term that refers to a white or grayish-white coloration of the iris of the eye, which can be an indication of certain eye diseases or conditions, such as albinism, ocular melanosis, or Russell-Silver syndrome. In some cases, leukocoria can also be a sign of a serious underlying health issue, such as a tumor or a congenital disorder.

Leukocyte

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Leukocyte refers to a type of white blood cell that fights infection and helps the body's immune system defend against disease.

Leukocytes

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Leukocytes are cells in the blood that are responsible for fighting infection and disease. They are a type of white blood cell and are produced in the bone marrow. There are several different types of leukocytes, including neutrophils, lymphocytes, and monocytes, each with its own specific function in the immune system.

Leukocytic

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Leukocytic refers to having a large number of white blood cells, particularly leukocytes, which are an essential part of the body's immune system. Leukocytes are produced in the bone marrow and circulate in the blood, and their functions include fighting infections and responding to inflammation.

Leukocytoclastic

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Leukocytoclastic is an adjective. It refers to a histopathological pattern characterized by the presence of fragmented neutrophils, typically seen in conditions associated with vasculitis, such as Henoch-Schönlein purpura, Sweet's syndrome, and Behçet's disease. The term is derived from Greek words leukos (white), cyto (cell), and klastikos ( fragmentation).

Leukocytoid

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Leukocytoid refers to a type of cell that resembles a white blood cell (leukocyte) in appearance, but is not actually a true white blood cell. These cells can be found in various conditions, including benign or malignant neoplasms, and their resemblance to leukocytes can sometimes lead to misdiagnosis.

Leukocytolysis

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Leukocytolysis is a medical term that refers to the destruction or fragmentation of white blood cells (leukocytes) within tissues or organs, especially in response to inflammation or infection. It is often accompanied by the release of cellular contents, such as enzymes and proteins, into the surrounding tissues, which can cause damage and tissue necrosis.

Leukocytopenia

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Leukocytopenia is a medical term that refers to a condition characterized by a decreased count of white blood cells (leukocytes) in the blood. White blood cells are an essential part of the immune system, and a low count can leave a person susceptible to infections. Leukocytopenia can be caused by various factors, including infections, medication side effects, bone marrow disorders, and autoimmune diseases. Treatment for leukocytopenia typically involves addressing the underlying causes and may involve medication, blood transfusions, and other therapies to help restore a normal white blood cell count.

Leukocytopoiesis

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Leukocytopoiesis is the process by which stem cells in the bone marrow develop into white blood cells, including neutrophils, lymphocytes, and monocytes. It is a type of hematopoiesis, the production of blood cells.

Leukocytoses

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Leukocytoses is a medical term that refers to an abnormal increase in the number of white blood cells (leukocytes) in the blood. White blood cells are an important part of the immune system and play a key role in fighting infections. When there is an excessive increase in the number of white blood cells, it can be a sign of an underlying medical condition, such as chronic inflammation, infection, or cancer. Leukocytoses can also be a side effect of certain medications or medical treatments.

Leukocytosis

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Leukocytosis is a medical term that refers to an increase in the number of white blood cells in the blood.

Leukocytozoon

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Leukocytozoon is a noun that refers to a type of parasitic infection caused by a protozoan parasite called Leukocytozoon. The infection typically affects birds, but can also be found in other animals, including cats and dogs. In birds, Leukocytozoon can cause a range of symptoms, including anemia, pale comb and wattles, and respiratory distress. The parasite is typically transmitted through the bite of an infected mosquito.

Leukoderma

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Leukoderma is a medical term that refers to a group of skin disorders characterized by the loss of skin pigmentation, resulting in white patches or depigmented areas on the skin. These conditions can be caused by various factors, including genetic mutations, environmental factors, and autoimmune disorders. Common types of leukoderma include vitiligo, piebaldism, and leprosy.

Leukoedema

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Leukoedema is a type of white patch or discoloration that appears on the lining of the mouth. It is a benign and harmless condition that is caused by the appearance of white cells on the mucous membranes. Leukoedema is more common in older adults and may be triggered by smoking, poor oral hygiene, or certain medications. The patches are usually white or grayish-white and can appear anywhere inside the mouth, including the tongue, cheeks, and lips. They do not cause harm and can be easily treated with improved oral hygiene and medical treatment if necessary.

Leukoencephalopathy

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Leukoencephalopathy is a medical term that refers to a group of neurological disorders that affect the white matter of the brain. It is characterized by degeneration or damage to the fatty insulation (myelin) that surrounds the nerve fibers in the brain, leading to symptoms such as cognitive impairment, mood changes, and difficulty with balance and coordination. Leukoencephalopathy can be caused by various factors, including infection, inflammation, autoimmune disorders, and exposure to toxins or medications.

Leukomalacia

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Leukomalacia is a medical term that refers to a condition characterized by the degeneration of white matter in the brain, typically occurring in premature infants. It is often seen in infants born before 34 weeks' gestation, and is usually caused by a lack of oxygen to the brain during birth or due to maternal infection during pregnancy. Leukomalacia can lead to damage to the brain's white matter, resulting in difficulties with motor skills, cognitive development, and vision. In some cases, leukomalacia can also cause cerebral palsy or other neurological disorders.

Leukonychia

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Leukonychia is a medical term that refers to the small white spots or rings on the surface of the nails, often caused by minor trauma or damage to the nail bed. It is a common condition and can occur in anyone, although it is more noticeable in people with lighter-colored nails.

Leukopenia

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Leukopenia is a condition in which the number of white blood cells in the bloodstream is reduced below normal levels.

Leukopheresis

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Leukopheresis is a medical procedure that involves the removal of white blood cells (leukocytes) from a patient's blood. This is typically done to help regulate the body's immune response in conditions such as immune disorders, autoimmune diseases, or cancer. The removed white blood cells can then be used for transfusions or further treatment. Leukopheresis is also known as leukapheresis.

Leukophoresis

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Leukophoresis is a medical procedure where a patient's white blood cells are removed from their blood and filtered to remove abnormal or diseased cells, typically in cases of leukemia or myeloma.

Leukoplakia

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Leukoplakia is a medical term that refers to patches of white membrane or mucous that form on the mucous membranes of the body, usually on the tongue, mouth, throat, or genitals. It is often a benign condition, but in some cases, it can be a sign of a more serious underlying health issue, such as oral cancer.

Leukoplast

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Leukoplast is a scientific term that refers to a type of cell membrane in plant cells. It is a layer of lipids found in the plant cell wall, primarily composed of sterols and phospholipids, which plays a crucial role in maintaining the structural integrity and permeability of the cell membrane.

Leukopoiesis

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Leukopoiesis is the process by which stem cells in the bone marrow differentiate into white blood cells, such as granulocytes, monocytes, and lymphocytes. It is the production of leukocytes (white blood cells) by the bone marrow, which is an important part of the immune system.

Leukorrhea

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Leukorrhea is a medical term that refers to a type of excessive white discharge from the cervix or vagina, often accompanied by itching, burning, or a strong odor. It can be a common symptom of vaginitis, a condition caused by an infection or inflammation of the vagina.

Leukorrhoea

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Leukorrhoea is a medical term that refers to a thick, whitish or yellowish discharge from the urethra, often accompanied by itching, burning, or pain in the genital area. It is typically caused by a fungal or bacterial infection, such as trichomoniasis, chlamydia, or gonorrhea.

Leukosis

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Leukosis is a type of neoplasm (abnormal growth) that occurs in the white blood cells. It is characterized by the uncontrolled proliferation of leukocytes (white blood cells) in the bone marrow, and is often caused by a viral infection or genetic mutations. Leukosis can lead to anemia, fatigue, and increased susceptibility to infections.

Leukostasis

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Leukostasis is a rare condition that occurs when there is an abnormally high number of white blood cells (leukocytes) in the blood. This can cause the white blood cells to accumulate in small blood vessels, leading to a blockage or narrowing of the vessels. This blockage can occur in various parts of the body, including the brain, liver, lungs, and kidneys. Leukostasis can cause a range of symptoms, including shortness of breath, dizziness, confusion, and seizures, depending on the location and extent of the blockage.

Leukotrichia

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Leukotrichia is a rare medical condition characterized by the premature whitening and graying of hair, often occurring in otherwise healthy individuals. It can be caused by various factors such as genetic predisposition, hormonal imbalances, or certain medical conditions. People with leukotrichia may experience premature hair loss, often starting in the eyebrows, beard, or scalp, and can affect one's appearance, self-esteem, and overall quality of life.

Leukotriene

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Leukotriene is a type of chemical mediator produced by white blood cells, such as neutrophils and eosinophils, in response to inflammation. It is involved in the body's natural defense against infection and plays a key role in the symptoms of asthma, allergic rhinitis, and other respiratory conditions. Leukotrienes are released into the bloodstream and cause blood vessels to constrict, which can lead to increased mucus production and airway constriction, making it harder to breathe.

Leukotrienes

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Leukotrienes are a group of naturally occurring chemical mediators produced by immune cells, particularly white blood cells, in response to inflammation or allergic reactions. They play a key role in the allergic response by causing smooth muscle contraction, increased mucus production, and increased blood vessel permeability.

Leuktra

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Leuctra was a decisive battle fought in 371 BC in Boeotia, central Greece, during the Theban War. It was a significant defeat for the Spartans and their allies, the Lacedaemonians, and a major victory for the Thebans, led by Epaminondas.

Leuprolide

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Leuprolide is a synthetic hormone that is used to treat certain types of cancer, such as prostate cancer and breast cancer. It works by reducing the production of hormones that stimulate the growth of cancer cells.

Leuprorelin

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Leuprorelin is a synthetic decapeptide hormone analogue that is used in the treatment of hormonal disorders and certain types of cancer. It works by mimicking the action of the natural hormone luteinizing hormone, thereby reducing the production of another hormone called prolactin. Leuprorelin is often prescribed to treat conditions such as excessive prolactin levels, endometriosis, uterine cancer, and metastatic prostate cancer. It is typically administered via an injection and can take several days to start working.

Leuteinising

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Leutinizing is not a commonly used word in English. However, I believe you meant to say "leutinizing" refers to a chemical process called luteinization, which is a type of cell differentiation that occurs in the ovaries of certain animals, including humans. During this process, granulosa cells in the ovaries undergo a transformation to produce testosterone, which is then aromatized to estrogen. This process occurs in response to luteinizing hormone (LH) and follicle-stimulating hormone (FSH) stimulation, and is a crucial part of the reproductive cycle.

Leuteinizing

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Leutenizing refers to the formation of a protein called lutropin or thyrotropin-releasing hormone (TRH) in the hypothalamus of the brain. This hormone plays a crucial role in regulation of the pituitary gland's production of thyroid-stimulating hormone (TSH) and luteinizing hormone (LH), which in turn affect the thyroid gland and gonads, respectively.

Leuven

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Leuven is a city located in the Flemish region of Belgium. It is the capital of the Flemish region and has a rich history dating back to the Middle Ages.