{"termId":44928,"language":"en","dictionary":"Cancer.gov","audience":"Patient","termName":"T cell","firstLetter":"t","prettyUrlName":"t-cell","pronunciation":{"key":"(... sel)","audio":"https://nci-media.cancer.gov/pdq/media/audio/728205.mp3"},"definition":{"html":"A type of white blood cell. T cells are part of the immune system and develop from stem cells in the bone marrow. They help protect the body from infection and may help fight cancer.   Also called T lymphocyte and thymocyte.","text":"A type of white blood cell. T cells are part of the immune system and develop from stem cells in the bone marrow. They help protect the body from infection and may help fight cancer.   Also called T lymphocyte and thymocyte."},"otherLanguages":[{"language":"es","termName":"célula T","prettyUrlName":"celula-t"}],"relatedResources":[],"media":[{"Type":"Image","ImageSources":[{"Size":"original","Src":"https://nci-media.cancer.gov/pdq/media/images/526538.jpg"},{"Size":"571","Src":"https://nci-media.cancer.gov/pdq/media/images/526538-571.jpg"},{"Size":"750","Src":"https://nci-media.cancer.gov/pdq/media/images/526538-750.jpg"}],"Ref":"CDR0000526538","Alt":"Blood cell development; drawing shows the steps a blood stem cell goes through to become a red blood cell, platelet, or white blood cell. A myeloid stem cell becomes a red blood cell, a platelet, or a myeloblast, which then becomes a granulocyte (the types of granulocytes are eosinophils, basophils, and neutrophils). A lymphoid stem cell becomes a lymphoblast and then becomes a B-lymphocyte, T-lymphocyte, or natural killer cell.","Caption":"Blood cell development. A blood stem cell goes through several steps to become a red blood cell, platelet, or white blood cell. "}]}