Immunology

Study identifies two different regulatory T cell populations

A regulatory class of human T cells descends from two different origins, one that relates to autoimmunity and one that relates to protective immunity, according to a new study led by Children's Hospital of Philadelphia (CHOP). ...

Immunology

How the body's B cell academy ensures a diverse immune response

Cells jostling for a spot in a germinal center face a cutthroat admissions process. Formed after exposure to a pathogen or vaccine, germinal centers act as a kind of immune system training academy, helping B cells refine ...

Medical research

When the body's B cell training grounds stay open after hours

If B cells are the munitions factories of the immune system, manufacturing antibodies to neutralize harmful pathogens, then the tiny biological structures known as germinal centers are its weapons-development facilities. ...

Diseases, Conditions, Syndromes

Antibodies improve in quality for months after COVID-19 vaccination

For at least six months after COVID-19 vaccination, antibodies produced by immune cells become steadily more formidable and more precisely targeted against the virus that causes COVID-19, according to a study of the antibody ...

Diseases, Conditions, Syndromes

What makes an mRNA vaccine so effective against severe COVID-19?

The first two vaccines created with mRNA vaccine technology—the Pfizer/BioNTech and Moderna COVID-19 vaccines—are arguably two of the most effective COVID vaccines developed to date. In clinical trials, both were more ...

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