{"id":22820,"date":"2022-08-30T01:09:24","date_gmt":"2022-08-30T01:09:24","guid":{"rendered":"https:\/\/www.knowlative.com\/?p=22820"},"modified":"2022-08-30T01:09:24","modified_gmt":"2022-08-30T01:09:24","slug":"t-cell-lymphocytes-t","status":"publish","type":"post","link":"https:\/\/www.knowlative.com\/ru\/t-cell-lymphocytes-t\/","title":{"rendered":"T cell &#8211; Lymphocytes T"},"content":{"rendered":"<div class=\"postie-post\"> <\/p>\n<p>A T cell is a type of lymphocyte, which develops in the thymus gland (hence the name) and plays a central role in the immune response. T cells can be distinguished from other lymphocytes by the presence of a T-cell receptor on the cell surface. These immune cells originate as precursor cells, derived from bone marrow, and develop into several distinct types of T cells once they have migrated to the thymus gland. T cell differentiation continues even after they have left the thymus.<\/p>\n<p>Groups of specific, differentiated T cells have an important role in controlling and shaping the immune response by providing a variety of immune-related functions.<\/p>\n<p>One of these functions is immune-mediated cell death, and it is carried out by T cells in several ways:<\/p>\n<ul>\n<li><strong>CD8+ T cells<\/strong>, also known as &#8220;<strong>killer cells<\/strong>&#8220;, are cytotoxic &#8211; this means that they are able to directly kill virus-infected cells as well as cancer cells. CD8+ T cells are also able to utilize small signalling proteins, known as cytokines, to recruit other cells when mounting an immune response.<\/li>\n<li>A different population of T cells, the <strong>CD4+ T cells<\/strong>, function as &#8220;<strong>helper cells<\/strong>&#8220;. Unlike CD8+ killer T cells, these CD4+ helper T cells function by indirectly killing cells identified as foreign: they determine if and how other parts of the immune system respond to a specific, perceived threat. Helper T cells also use cytokine signalling to influence regulatory B cells directly, and other cell populations indirectly. Regulatory T cells are yet another distinct population of these cells that provide the critical mechanism of tolerance, whereby immune cells are able to distinguish invading cells from &#8220;self&#8221; &#8211; thus preventing immune cells from inappropriately mounting a response against oneself (which would by definition be an &#8220;autoimmune&#8221; response). For this reason these regulatory T cells have also been called &#8220;<strong>suppressor<\/strong>&#8221; T cells. These same self-tolerant cells are co-opted by cancer cells to prevent the recognition of, and an immune response against, tumour cells.<\/li>\n<\/ul>\n<p> <\/p>\n<div class=\"postie-attachments\"><center><a href=\"https:\/\/www.knowlative.com\/wp-content\/uploads\/2022\/08\/Attachment-1-93.jpg\" class=\"et_pb_lightbox_image\" title=\"\"><span class=\"et_pb_image_wrap \"  style=\"max-height: 600px !important;\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.knowlative.com\/wp-content\/uploads\/2022\/08\/Attachment-1-93-300x300.jpg\" alt=\"\" title=\"\" height=\"auto\" width=\"auto\" srcset=\"https:\/\/www.knowlative.com\/wp-content\/uploads\/2022\/08\/Attachment-1-93.jpg  500w, https:\/\/www.knowlative.com\/wp-content\/uploads\/2022\/08\/Attachment-1-93-300x300.jpg-480x480.jpg 480w\" sizes=\"(min-width: 0px; ) and (max-width: 480px) 480px, (min-width: 481px) 500px, 100vw\" class=\"wp-image-22821 \" style=\"max-height: 600px !important;\"><br \/>\n<\/span><\/a><\/center><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A T cell is a type of lymphocyte, which develops in the thymus gland (hence the name) and plays a central role in the immune response. T cells can be distinguished from other lymphocytes by the presence of a T-cell receptor on the cell surface. These immune cells originate as precursor cells, derived from bone [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[92],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>T cell - Lymphocytes T - Knowlative<\/title>\n<meta name=\"description\" content=\"T cell - Lymphocytes T\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.knowlative.com\/ru\/t-cell-lymphocytes-t\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T cell - Lymphocytes T - Knowlative\" \/>\n<meta property=\"og:description\" content=\"T cell - Lymphocytes T\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.knowlative.com\/ru\/t-cell-lymphocytes-t\/\" \/>\n<meta property=\"og:site_name\" content=\"Knowlative\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Knowlative\" \/>\n<meta property=\"article:published_time\" content=\"2022-08-30T01:09:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.knowlative.com\/wp-content\/uploads\/2022\/08\/Attachment-1-93-300x300.jpg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u043c\u0438\u043d\u0443\u0442\u044b\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.knowlative.com\/ru\/t-cell-lymphocytes-t\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.knowlative.com\/ru\/t-cell-lymphocytes-t\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/www.knowlative.com\/ru\/#\/schema\/person\/0284863b0a168bb58e93aaeb3a7f09d5\"},\"headline\":\"T cell &#8211; 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