Dec. 18, 2024 — Scientists have generated human stem cell models which contain notochord -- a tissue in the developing embryo that acts like a navigation system, directing cells where to build ...

Regulatory T (T Reg) cells are essential for maintaining peripheral tolerance, preventing autoimmunity and limiting chronic inflammatory diseases. However, they also limit beneficial responses by ...

T cells are white blood cells that are important for adaptive immunity. They have unique cell surface receptors that are generated by randomly assorting genes. These receptors allow T cells to ...

Today there is mounting concern about the threat of a bioterrorist attack using smallpox—so much concern that in October 2001 the American government decided to order enough vaccine to protect ...

Dec. 16, 2024 — Researchers have uncovered unexpected diversity in the genetic processes that determine the sex of the African clawed frog, a significant discovery in what was already one of the ...

CD4 T helper cells are a type of white blood cell called a lymphocyte that serves an important role in your immune system. These cells help defend the body against infection by directing other "killer ...

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