Examples of white blood cell in the following topics:
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- Blood is composed of plasma and three types of cells: red blood cells, white blood cells, and platelets.
- The cellular components of blood are erythrocytes (red blood cells, or RBCs), leukocytes (white blood cells, or WBCs), and thrombocytes (platelets).
- By volume, the RBCs constitute about 45% of whole blood, the plasma about 54.3%, and white blood cells about 0.7%.
- RBCs, endothelial vessel cells, and other blood cells are also marked by glycoproteins that define the different blood types.
- There are several different types of white blood cells: basophils, eosinophils, neutrophils, monocytes, natural killer cells, B- and T-cell lymphocytes, macrophages, and dendritic cells, all of which perform distinct functions.
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- Venules are small blood vessels in the microcirculation that connect capillary beds to veins.
- A venule is a small blood vessel in the microcirculation that allows deoxygenated blood to return from capillary beds to larger blood vessels called veins.
- Venules are extremely porous so that fluid and blood cells can move easily from the bloodstream through their walls.
- They are characterized by plump endothelial cells as opposed to the usual thinner endothelial cells found in regular venules.
- HEVs enable lymphocytes (white blood cells) circulating in the blood to directly enter a lymph node by crossing through the HEV.
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- A lymphocyte is a type of white blood cell in the vertebrate immune system.
- A lymphocyte is a type of white blood cell in the immune system.
- Lymphocytes develop from lymphoblasts (differentiated blood stem cells) within lymphoid tissue in organs such as the thymus.
- The three major types of lymphocyte are T cells, B cells, and natural killer cells.
- A stained lymphocyte surrounded by red blood cells viewed using a light microscope.
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- A lymphocyte is a type of white blood cell in the vertebrate immune system.
- A lymphocyte is a type of white blood cell in the immune system, including both the B and T cells of the adaptive immune system and natural killer (NK) cells of the innate immune system .
- Subtype 2 helper T cells present antigens to B cells.
- Suppressor T cells (T-reg cells) retain some of their ability to bind to self-cells.
- Memory B cells are dormant B cells with the same BCR as the B cell from which they differentiated.
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- Blood contains plasma and blood cells, some of which have hemoglobin that makes blood red.
- Blood is a specialized bodily fluid in animals that delivers necessary substances, such as nutrients and oxygen, to the cells and transports metabolic waste products away from those same cells.
- It is an extracellular matrix in which blood cells are suspended in plasma.
- Blood contains red blood cells (RBCs), white blood cells (WBCs), platelets, and other cell fragments, molecules, and debris.
- By volume, red blood cells constitute about 45% of whole blood, plasma about 54.3%, and white cells about 0.7%, with platelets making up less than 1%.
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- Haematopoiesis refers to the formation of blood cells components.
- Haematopoiesis refers to the formation of blood cellular components, including both white and red blood cells.
- Haematopoietic stem cells (HSCs) reside in the bone marrow and have the unique ability to give rise to all mature blood cell types through differentiation into other progenitor cells.
- Megakaryocytes (the cells that produce platelets) and erythrocytes (red blood cells) are not formally considered to be leukocytes, but arise from the common myeloid progenitor cells that produce the other cellular components of blood.
- In developing embryos, blood formation occurs in aggregates of blood cells in the yolk sac called blood islands.
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- T cells belong to a group of white blood cells known as lymphocytes and play a central role in the cell-mediated branch of the adaptive immune system.
- They are distinguished from other lymphocytes, such as B cells and natural killer cells (NK cells), by the presence of a T cell receptor (TCR) on the cell surface.
- All T cells originate from hematopoietic stem cells in the bone marrow, which are capable of differentiating into any type of white blood cell.
- The remaining cells exit the thymus as mature naive T cells.
- Scanning electron micrograph of T lymphocyte (right), a platelet (center), and a red blood cell (left).
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- Commonly known as white blood cells, they are derived from common lymphoid progenitors.
- In developing embryos, blood formation occurs in aggregates of blood cells in the yolk sac, called "blood islands. " As development progresses, blood formation occurs in the spleen, liver, and lymph nodes.
- For the stem cells and other undifferentiated blood cells in the bone marrow, blood cells are determined to specific cell types by random.
- Red and white blood cell production is regulated with great precision in healthy humans, and the production of granulocytes is rapidly increased during infection.
- A comprehensive diagram showing the development of different blood cells from hematopoietic stem cell to mature cells.
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- A complete blood count (CBC), useful in diagnosing disease, yields a count of numbers or volumes of the cell types in the blood.
- A complete blood count (CBC), also known as full blood count (FBC), full blood exam (FBE), or blood panel, is a test panel that gives information about the cells in a patient's blood, as requested by a doctor or other medical professional.
- The cells that circulate in the bloodstream are generally divided into three types: white blood cells (leukocytes), red blood cells (erythrocytes), and platelets (thrombocytes).
- Reticulocytes are immature red blood cells, typically composing about 1% of the red cells in the human body.
- Like mature red blood cells, reticulocytes do not have a cell nucleus.
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- Platelets, also called thrombocytes, are membrane-bound cell fragments derived from the fragmentation of larger precursor cells called megakaryocytes, which are derived from stem cells in the bone marrow.
- Platelets are not true cells, but are instead classified as cell fragments produced by megakaryocytes.
- They are about 1/10th to 1/20th as abundant as white blood cells.
- Image from a light microscope (40×) from a peripheral blood smear surrounded by red blood cells.
- One platelet can be seen in the upper left side of the image (purple) and is significantly smaller in size than the red blood cells (stained pink) and the two large neutrophils (stained purple).