He found a population of. striking dendritic-shaped cells in the spleen. Shortly thereafter it became clear that DCs existed. in all lymphoid and most non-lymphoid tissues. During the 1970s, most immunologists. considered macrophages to be the principal APC in the immune system.
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Definition of Dendritic cell. Dendritic cell: A special type of cell that is a key regulator of the immune system, acting as a professional antigen-presenting cell (APC) capable of activating naïve T cells and stimulating the growth and differentiation of B cells. Dendritic cells are found, for example, in the lymph nodes and spleen. As an APC, a dendritic cell can retain antigen for long periods on its surface, present the antigen to a T or B cell and so influence their behavior.
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Cells are organized into tissues and tissues into organs. Embedded in the cell membrane are a wide range of molecules that vary with the cell type and are typically composed of proteins or glycoproteins that have a cytoplasmic transmembrane and external domains.
http://medical-dictionary.thefreedictionary.com/Plasmacytoid+dendritic+cell
Dendritic cells are antigen-presenting cells (APCs) which play a critical role in the regulation of. the adaptive immune response. Dendritic cells (DCs) are unique APCs and have been referred. to as “professional” APCs, since the principal function of DCs is to present antigens, and. because only DCs have the ability to induce a primary immune response in resting naïve T. lymphocytes.
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2. a small more or less enclosed space. All living cells arise from other cells, either by division of one cell to make two, as in mitosis and meiosis, or by fusion of two cells to make one, as in the union of the sperm and ovum to make the zygote in sexual reproduction.
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The contents of a cell are referred to collectively as the protoplasm. In eukaryotic cells the contents of the nucleus are referred to as nucleoplasm and the rest of the protoplasm as the cytoplasm.
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Mature DCs are defined by key morphological features and by the presence or absence of. various molecules on the cell surface. The key morphological characteristic of DCs is the. presence of numerous membrane processes that extend out from the main cell body (similar to. dendrites on neurons).
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dendritic cell in Medicine Expand. dendritic cell n. A cell that has branching processes. Any of the cells in the neural crest of the embryonic ectoderm having extensive processes and developing early as producers of melanin. See follicular dendritic cell. dendritic cell. A highly specialized white blood cell found in the skin, mucosa, and lymphoid tissues that initiates a primary immune response by activating lymphocytes and secreting cytokines.
http://www.dictionary.com/browse/dendritic-cell
(děn-drĭt'ĭk) A highly specialized white blood cell found in the skin, mucosa, and lymphoid tissues that initiates a primary immune response by activating lymphocytes and secreting cytokines.
http://www.dictionary.com/browse/dendritic-cell
The nucleus is bounded by a nuclear membrane, which is composed of two lipid bilayer membranes. Prokaryotic cells, the bacteria, have no nucleus, and their genetic material, consisting of a single circular naked DNA molecule, is not separated from the rest of the cell by a nuclear membrane.
http://medical-dictionary.thefreedictionary.com/Plasmacytoid+dendritic+cell
what does dendritic cell mean
Dendritic cell is a cell that has branching processes and any of the cells in the neural crest of the embryonic ectoderm having extensive processes and developing early as producers of melanin. Dendritic cell is a cell that has branching processes.